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We’ve all been there. You turn on your PC, and instead of getting straight to work, you’re faced with horrific slowdown and loud-running fans. Hit Ctrl + Shift + Escape, and you will see that your CPU usage is inexplicably at 100%.

It’s a common problem that’s, luckily, not usually too hard to solve. Here are several fixes for the 100% CPU usage problem in Windows.

Disable SysMain (formerly known as Superfetch)

SysMain is a process by which Windows 10 learns which apps you use most often, then pre-fetches them for you so they load quicker each time you use them. It’s a constant background process that doesn’t usually cause problems, but it doesn’t always play nice with older devices. This used to be known as Superfetch in older versions of Windows 10.

Alternatively, to disable it permanently (or until Windows switches it on again, which can happen after you update the OS), press Win + R, type services, then in the Services window scroll down to Superfetch.

You can technically do this to any service that’s hogging CPU, but some services are system-critical, so you need to be careful. Another culprit of high CPU usage is “Windows Search,” which you can safely disable, too.

WMI Provider Host Using 100% CPU

The WMI (Windows Management Instrumentation) Provider Host is a core service on Windows that links up with various software on your PC to send it information about your operating system. In other words, it’s a very important process, and you shouldn’t disable it lightly. If, however, you see in the Task Manager Processes tab that it’s using a lot of CPU, then of course you should do something about it.

If that doesn’t work, then the next solution is a little more intricate but also has the potential to offer more long-term solutions for your CPU woes.

Check the middle column, “Operational,” look for errors in the service, then under the “General” tab below that, check the “ClientProcessId” number. This should help you zoom in on the app or process clogging up your WMI Provider Host service.

There may be multiple errors like this in the WMI Provider Host, in which case you should repeat the above process to address the different errors. It’s also possible that just one app/process has been hogging your CPU all this time, in which case you should be good to go after you’ve dealt with the culprit.

Reset Your Power Plan

Twiddling around in Windows’s power options can have a substantial effect on your PC performance. If you’re set to “High performance” – particularly if you made tweaks to the “plan settings” – then it’s possible that you’re overloading your CPU. (Again, older devices are susceptible to this.)

Windows 10 Windows 11 Check Your Power Supply

This one’s an issue that can affect both desktop and laptop Windows users. If you have a faulty power supply (the mains cable on a laptop, the PSU in a desktop), then it can automatically start undervolting your CPU to preserve power. When undervolted, your CPU can function at only a fraction of its full power, hence the possibility of this manifesting as 100% CPU usage on Windows.

To solve this on a laptop is quite simple: unplug your laptop from the power cable, then follow our instructions in the previous section to set its power plan to ‘High performance’. If the issue was with your power supply, the CPU usage should return to normal in the task manager (Ctrl + Shift + Esc).

On a desktop things can be a little more complicated, as you’ll need to physically remove the PSU from your PC and test a different one. We recommend going through our other tips listed below before trying this.

100% CPU Usage in Games

Most games tend to be GPU-intensive rather than CPU-intensive, so shouldn’t really be hammering your CPU too hard. So if you run a game and shoot up to 100% CPU usage, there might be a problem you have to intervene in as it can cause performance bottlenecks and an ugly “dragging” effect.

Before the game-specific tips below, you should try temporarily turning off real-time protection in Windows Defender when you play, as some people have reported this to cause high CPU usage while gaming.

Here, switch the ‘Real-time protection’ slider to “Off”. We recommend you switch this back on after gaming.

Fix 100% CPU Usage in Warzone

Activision Blizzard’s free-to-play battle royale game – a kind of standalone expansion to Call of Duty: Modern Warfare – isn’t terrible well optimized, and to fix its high CPU usage problem you need to play around in Task Manager.

In the context menu, go to “Set priority” then change the game’s priority to “High”.

Note: If you’re experiencing high CPU usage in other games, this tip may also solve that problem.

Fix 100% CPU Usage in Apex Legends

High-flying battle royale game Apex Legends should not be rinsing your CPU, but if it is, then the good people of the gaming community have a good workaround for you.

The most popular fix for high CPU usage while playing Apex Legends involves going to the game’s graphics settings and take a look at your v-sync settings. If your v-sync is disabled, switch it to “Dynamic”, apply, then switch back to Disabled.

Conversely, if your v-sync mode is different, switch to an alternative v-sync mode and switch back again. That should do it

Disable Third-Party Antivirus Software

This one may be a bit contentious, but our view here is that if you’re using antivirus software on Windows, then you’re probably putting unnecessary strain on your CPU (particularly if its older). It doesn’t usually hurt to have the extra security, but you probably don’t need it.

Every year we write an in-depth feature about Windows’ onboard security software, Windows Defender, and every year it gets better and better. At this point, it’s more or less on par with the best antivirus software out there.

Don’t be afraid to disable your third-party antivirus software to see if it helps your CPU usage. If it does, then uninstall it, because Windows Defender should really have you covered.

With high CPU usage, it may be running pretty hot, too, so we’ve put together a bunch of ways you can bring the CPU temperature down. Ransomware is also a big culprit in slowing down your PC and heating up your CPU, so here’s how to enable ransomware protection in Windows.

Robert Zak

Content Manager at Make Tech Easier. Enjoys Android, Windows, and tinkering with retro console emulation to breaking point.

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How To Fix Windows Search High Cpu Or Disk Usage On Windows 11

In case Windows Search is using exceptionally high CPU or disk resources, then you can use the following troubleshooting methods on Windows 11. The methods to fix the issue include simpler methods like restarting your PC to restarting or rebuilding search services, using DISM and SFS commands, and much more.

8 Ways to fix Windows Search High CPU or Disk Usage Fix Issue on Windows 11

Method #01: Using troubleshooter

Windows 11 has a dedicated troubleshooter to help fix Windows Search issues on your system. In most cases, the troubleshooter should help identify and solve background issues which should reduce the overall disk usage of Windows Search. Use the guide below to get you started. 

Select ‘Searching Windows’. 

Check the box for ‘My problem isn’t listed above’.

Windows Troubleshooter will now try and apply fixes to reduce your disk usage. Restart your system if prompted. 

And that’s it! Windows troubleshooter will now have fixed high disk usage by Windows Search on your PC. 

Related: How to Open Control Panel in Windows 11

Method #02: Restart your PC

Restarting your PC can sometimes fix most issues. Restarting will restart the Windows Search services and tasks in the background which should get Search back up and running on your PC again. If however, restarting your PC does not help, then you can try manually restarting Windows Search services on your Windows 11 PC using the guide below. 

Method #03: Restart Search services

Press Windows + R on your keyboard and type in the following and press Enter on your keyboard. 


Try and check your disk usage in the Task Manager now. If a background conflict for the search service was causing high disk usage on your PC then this should help fix your issue. 

Related: How to Disable Updates on Windows 11

Method #04: Reduce indexed locations on your PC

In case your PC is using older hardware or an HDD then it is likely that your disk is getting overloaded with continuous indexing tasks in the background which is causing high disk usage. Additionally, if you have drives larger than 1TB in size then this could also be the case for you regardless of the fact if you are using an SSD or an HDD. In such cases, you can try reducing the number of indexed locations for Windows Search and see if that fixes your issue. If it does, then we recommend you increase your indexed locations slowly so that it does not overwhelm your disk in the background. This should be a rare case scenario considering how Windows Search works but it is worth a shot nonetheless. Use the guide below to reduce your indexed locations. 

Add locations to exclude

Press Windows + i on your keyboard. Select ‘Privacy & security’. 

The folder will now be added to the exceptions list and it will no longer be indexed by Windows Search. Repeat the steps above for all the folders and locations you wish to exclude from Windows Search. 

Remove already indexed locations

Press Windows + i on your keyboard and select ‘Privacy & security’. 

Uncheck the boxes for locations or drives already added to Windows Search indexing.

Selected locations will now be removed from the indexing list of Windows Search. This should also help fix high disk usage on your PC if your disk was being overwhelmed by background indexing in Windows 11. 

Method #05: Rebuild your search index to get rid of conflicts

If you recently added a folder, changed drives, or renamed your partitions then it is likely that Windows Search has been experiencing conflicts in the background due to existing indexed locations. In such cases, you can use the guide below to rebuild your search index on Windows 11. Follow the guide below to get you started. 

Press Windows + i on your keyboard and select ‘Privacy & security’ from your left sidebar.

Once completed, we recommend you restart your PC and check your disk usage. If your disk is no longer being overwhelmed then a faulty or old search index was likely the cause of it.   

Method #06: Use the resource monitor to check for culprits

By this point, if you haven’t been able to fix high disk usage on your PC then let’s verify if this problem is being actually caused by Windows Search. Follow the guide below to use Windows Resource Monitor to look for culprits that are causing high disk usage on your system. 


Switch to the ‘Disk’ tab as shown below. 



And that’s it! If you have verified that your high disk usage is being caused by Windows Search then you can continue using one of the fixes below. If not, you can use this guide by us to fix high disk usage on your PC. 

Method #07: Run DISM and SFC commands on your disk

DISM and SFC command help fix general disk errors and defragmentation issues with your system. If none of the methods above worked for you, then it might be time to try and fix errors with your disks and system files. The DISM command helps fix your Windows image while the SFC commands scan for corrupted files and replace them with usable ones. Use the guide below to run DISM and SFC commands to fix your disks in Windows 11. 

Now type in the following to repair your system image. 

DISM.exe /Online /Cleanup-image /Restorehealth

Once the process completes, type in the following and press Enter on your keyboard. 

sfc /scannow

Windows will now scan and replace corrupted system files on your system. This command will also replace corrupted protected files which should help solve most high disk usage issues on your system. Once the process completes we recommend you restart your system and check your disk usage.  High disk usage should now be fixed on most modern systems. 

Method #08: Get in touch with your OEM/Microsoft Support

If you are still facing high disk usage issues due to Windows Search then it might be time to get in touch with a support team. This could be an issue unique to your system hardware or windows installation and the respective team could help you solve this issue. Use the link below to get in touch with the Microsoft Support team in your region. If you are looking to get in touch with your OEM support team then we recommend you use your OEM support app instead. 

That’s all.


How To Fix Desktop Window Manager Having High Cpu Usage

Desktop Window Manager is almost always running, requiring some system resources. However, it shouldn’t be the dominant program consuming your available resources and making it difficult to run other things. If you’re noticing freezing or delays because the Desktop Window Manager is experiencing high usage, there are some things you can do to fix it and help your computer work more efficiently. 

Windows Desktop Manager is the utility responsible for many of the visual effects you see in Windows. Your desktop, personalization, and other features rely on it to provide the power to make things look good. Without it, you wouldn’t even be able to run multiple monitors effectively, let alone have the little quality-of-life upgrades like a small preview when you hover over an icon on the taskbar. 

Sometimes a program experiences an error and starts using more resources to try to compensate. When you notice a rare spike in resources, that’s likely the problem you’re having. 

However, some people report that the issue is related to specific drivers. If you’re using an old driver and seeing a lot of resource usage of any kind from Desktop Window Manager, it could be outdated drivers that don’t have the fix yet.

It can take time to pinpoint the cause of high system utilization for Desktop Window Manager. That’s why the best way to approach fixing it is to go through a list of solutions to see which one works for you. 

You can end the program, but it’s part of your operating system’s core functions and makes everything run much smoother if you use modern windows and transitions. Instead, try to address the problems that could be the issue’s root. 

Since Desktop Window Manager deals with things like your desktop background and theme, changing it might help. It’s especially likely to work if you use custom themes or animated desktops. Displaying these might take a bit of a toll on your system.

Of course, it’s normal to want to run any personalization you want on your computer. However, it might not be the best bet if it’s consistently creating a bottleneck. If changing the desktop settings fixes the problem, you may need to upgrade some of your parts to return to those settings.

Do it now if you don’t regularly update your drivers and operating system. Fixes in these updates can address problems like the Desktop Window Manager’s high resource utilization. 

You can also update drivers through the device manager. Here’re the steps:

Once you’re done with the process, restart your computer and check on the Desktop Window Manager resource utilization.

The issue with Desktop Window Manager and memory leaks was known by the community and addressed in an Intel driver update. While some people still have the problem for other reasons, updating your drivers should remove at least one issue.  

An unwanted program may cause problems on your computer. Sometimes the signs of a virus or malware are subtle issues like high resource utilization. Luckily, Windows has its own antivirus software to help you keep your computer secure.

It might take a little time for your computer to finish scanning for viruses. Once it’s done, take any recommended actions and restart your computer to see whether the problem is fixed. If you use a different antivirus, open the program and run a full scan. 

Explorer.exe is another significant part of Windows that you use regularly. It is the process that controls your Windows interface. Your taskbar, start menu, and many other things are supported by explorer.exe. However, you can kill and restart the process, and sometimes that will solve the issues with Desktop Window Manager.

This should be relatively easy as long as you have access to Task Manager. You might notice the things open on your monitor blinking when you restart the process, but it should only take a moment. Once you’re done, check whether Desktop Window Manager is still using too many resources.

The wdm.exe process can also be stopped. Some users report a workaround where you can stop the process when you boot up the system and then may have a few hours without memory leaks. If updating your drivers doesn’t work, consider doing this to minimize the problem.

When I do that, my computer stutters. It also froze the copy of Google Chrome I was using. However, users with Desktop Window Manager memory leaks may find it beneficial to do this occasionally to reduce the system resource usage immediately. 

Windows offers a lot of visual effects to make the UI look more interesting and engaging. However, these might increase the amount of resources Windows uses to run chúng tôi Turning them off can help you conserve resources.

You may notice some differences in how things look in your system, but it may also help it work better. 

You can’t get rid of Desktop Window Manager because it’s a major part of the Windows operating system. It offers a lot of functionality and is incorporated into the system itself. Without it, the computer won’t work correctly. 

Taskbar Not Working On Windows 11? Here’s How To Fix It

A while back, certain Windows 11 Insider Builds faced a major responsiveness issue with the taskbar due to server-side issues. Microsoft patched this pretty quickly, so the newer builds shouldn’t have this issue.

Of course, even users not in the Insider program can sometimes face this issue due to reasons like incorrect configurations or system corruption.

In such cases, using the correct settings, repairing the corrupt files, and updating the system is most likely to be helpful. We’ve detailed the steps for these and more solutions in the article below.

Misconfigured Taskbar settings

Malfunctioning system services

Outdated system

Faulty updates

Corrupt system files

As minor issues like this are often a result of a bug or glitch, restarting the PC can easily resolve it. If you’ve got unsaved work or restarting simply didn’t help, you can try the solutions listed below.

As with any other Windows component, a number of services work in the background to help the taskbar function properly. The taskbar could be malfunctioning because one of those services is facing some issue, so it’s worth restarting them. Here are the steps to do so:

Press CTRL + Shift + Esc to launch the Task Manager and switch to the Details tab.

If that doesn’t work, repeat this for the following services:






Windows 11 offers various settings to personalize the look and functionality of the taskbar. If any of these settings have been misconfigured, it could lead to the taskbar not working as intended. So, we recommend reviewing these settings with the following steps:

Uncheck the Automatically Hide Taskbar option.

Change the alignment to Center.

Enable the Show my taskbar on all displays option if applicable.

Enable the Select the far corner of the taskbar to show the desktop option.

Check if the taskbar is working properly now.

As stated, issues like this are often caused by minor bugs which are patched in new updates. If you haven’t updated your system in a while, this is likely to be helpful. You can update on Windows 11 with the following steps:

Press Win + R, type ms-settings:windowsupdate, and press Enter.

On the other end of the spectrum, some users also face this issue due to a buggy update. One user, in particular, solved this issue by uninstalling the Security Update for Microsoft Windows (KB5006674). So, if the issue started after an update in your case, the following steps will be helpful:

Press Win + R, type ms-settings:windowsupdate, and press Enter.

Locate and select the problematic update and press Uninstall.

Windows components like the Taskbar can also stop working properly because the system files pertaining to that component are corrupt. We recommend referring to Repair Corrupted Windows Files for detailed instructions on how to do the same, but here are the main steps:

Press Win + R, type cmd, and press CTRL + Shift + Enter.

We also recommend minimizing abrupt shutdowns and keeping your PC updated and malware-free to prevent system corruption in the future.

Note: User-reported fixes are anecdotal, but they may be worth checking if the above solutions didn’t resolve the issue for you.

A Reddit user was able to get his taskbar working by changing the Date and Time, whereas another user had success with changing the time server to

One user couldn’t access certain parts of the taskbar. He was able to fix the frozen taskbar by maximizing, then minimizing the open application and explorer windows.

Another user was unable to access not just the taskbar but also the explorer. He fixed this issue by using the registry editor to switch back to the Windows 10 taskbar. We recommend backing up the registry and following the steps listed below if you’d like to do the same:

Press Win + R, type cmd, and press Enter.

Finally, some users have also had success with reinstalling the basic UWP (Universal Windows Program). You can do the same with the following steps:

Press Win + R, type powershell, and press CTRL + Shift + Enter.

Steam Overlay Not Working? Here’s How To Fix It

With about 120 million users active on Steam monthly, solving problems has become common ground. The platform doesn’t always work perfectly, and you may be here to fix the Steam overlay not working.

Steam is the largest gaming platform in the world, as it has more players than either Xbox or PlayStation. Part of its success is its easy-to-use community features. 

In particular, the Overlay allows you to use these community features as you play. You can send or reply to messages, invite or find friends, find guides, write on community boards, etc. 

Instead of changing windows, you can also access any other Steam feature from the Overlay. So, when it doesn’t work, you’re forced to go to your desktop and choose the Steam launcher. 

How to Fix Steam Overlay Not Working?

The Steam overlay not working issue has various possible solutions. It depends on your software and hardware configuration. We recommend trying each fix until you find the one that works.

Understand the Steam Overlay Functions

Here’re the Steam overlay functions:

In-game micro-transactions and purchases. 

Accessing your friend’s list, finding friends, inviting friends, sending invites, or accepting invites.

Taking screenshots and seeing your screenshots.

Trading and Steam Market features.

Managing the in-game inventory (like badges).

Accessing the game’s community tab.

Any function you would be able to use on the Steam website, as the Overlay has a built-in web browser. 

These functions are hardware-intense, especially on top of an already heavy game. Running both at the same time could be impossible for your PC.

Suppose your computer runs a title below or very close to the minimum specs. In that case, Steam is probably shutting down the Overlay to run the title.

There’s not much you can do in this case except lowering the graphical specs (if possible) and turn on the Overlay again.

Ensure the Steam Overlay Is on

Speaking of which, you should check the Overlay feature is on. The feature may cause performance issues, so Steam can shut it off if it needs. Alternatively, a Steam update might change the configuration.

Here’s where to find the Overlay:

As for the shortcuts, ensure they do not repeat in your game. Steam will use the game’s shortcut and skip the overlay order if it does. You need to change one or both, so they are not the same.

For example, suppose you’re playing a strategy game like Age of Empires. In that case, you may have dozens of keyboard combinations for different tasks and commands.  

Check the Overlay Per Each Game

Similarly, Steam may close the Overlay option per game, depending on how they perform on your PC.

Here’s how to check it:

Verify the Integrity of Your Game Files

You must also make sure your Steam games are running properly. Verifying the files is the option: 

The process will identify game corruption and re-download damaged files if it needs. 

Close Background Programs

You can decrease the load on your system by closing the programs you don’t need while you play.

Closing background programs relieve some tension. It’s the solution if your system is barely running games.

For example, I used to play Cyberpunk 2077 on a laptop with a 1060 NVIDIA card. It barely did the job, but it couldn’t use the Steam Overlay.

Update Your PC

As for updates, you have three general options. You can update Windows, your motherboard’s drivers, and your GPU’s drivers.

You should also ensure you have updated all major drivers (like GPU and VGA). It will improve the overall Steam performance.

Updating Windows Updating Your GPU

If you have a discrete GPU (a graphics card rather than integrated graphics on your CPU), you have one of two brands. It’s either AMD or NVIDIA.

Each brand has software that controls driver updates and graphical settings. The program should be on your PC.

Either option offers software that automatically detects your GPU and puts you up to date.

Download and install the program. In particular, NVIDIA will ask you to create an account, but you can link your account from Google or Facebook. After the process, the software will guide you towards a driver update.

Typically, you’d find a “Driver Update” button on the software’s home page.

Updating the Motherboard’s Drivers

If you have a custom or built PC, you need some extra steps to update your motherboard.

Motherboards have drivers to improve their compatibility with the pieces you connect. These drivers depend on your motherboard brand and model, so guiding you through an exact tutorial is harder.

However, these are the general steps:

Another way to check your motherboard’s name is like so:

Type “command prompt” on the Windows search bar and open the Command Prompt

Type “msinfo32” and press Enter

Check “BaseBoard Product” for the information

Grant Administrator Access

The lack of administrator privileges is a common reason the Steam overlay doesn’t work. 

By default, Steam runs without administrator access, and here’s how to change it.

These changes make both Steam and the Steam Overlay work with administrator privileges. 

Run the Game as Administrator

An alternative solution is opening the game directly from its installation folder.

It bypasses any bugs within the game, so this would be the fix if the Steam Overlay works on some titles but not others. 

Add Steam as an Exception for Your Anti-virus

Your anti-virus software may be causing issues with the Steam Overlay as well.

The solution is adding the whole Steam folder as an exception. I use Windows Defender, so my tutorial follows the built-in software. You’d probably find similar options on your particular anti-virus program.

This option should cease all anti-virus intrusions with Steam and Steam games. However, add the secondary folder if you have installed Steam games on a secondary drive. 

Reinstall Steam

If all else fails, you have to reinstall Steam. We’re teaching you how to do it without losing your games.

Tv Won’t Turn On? Here’s How To Fix It

Your TV should turn on after pressing the power button on the remote. However, sometimes, the TV may refuse to turn on.

This issue primarily arises due to hardware failure rather than software issues. Your TV may fail to turn on even if a minor hardware component is faulty. Glitches in the power circuitry and loose cable connections are the key causes of the problem. But, there may be significant issues like a blown fuse or capacitors which may require further troubleshooting.

Luckily, there are a few things that you can look after yourself before taking it to a repair center. Keep reading to fix your TV that won’t turn on.

If your TV doesn’t turn on, it might initially seem like a massive issue. However, you don’t need to panic. Provided that there is no major hardware failure, a few troubleshooting techniques can help you get your TV back.

The issue primarily arises due to power glitches in the circuit board of your TV. You can perform a soft reset and solve the glitch in such cases. Most of the time, a soft reset will solve the problem without further exploration.

To do a soft reset, unplug the power cable from the supply. Wait about a minute. Then, press the power button on the TV panel for about 30 seconds. It will help drain the residual power from the capacitors and solve the power glitch. Then replug the cable and try to turn on the TV. It should solve the problem.

Since the problem is directly concerned with the power supply, you should also check if the power cord of the TV is connected correctly to the wall socket. You can try changing the power socket. You can use an electric tester pin to determine if the socket is faulty.

If you don’t have one, connect another device, like a phone charger, to inspect if the power socket is faulty. If it works, there is no issue with the power socket; the power cord or TV is probably faulty.

Likewise, if the power cord is connected to a voltage regulator, remove it from there and connect it directly to the wall outlet, as a faulty voltage regulator will also prevent the TV from turning on. Next, you need to see if there is any breakage in the power cord. Inspect it thoroughly. If there is any breakage, you can quickly get a replacement cord.

Most modern TVs utilize a voltage level between 110-240 volts to operate correctly. Anything above or below the level can cause issues, and you can not turn on the TV.

You can see your home’s electrical distribution box or sub-meter to know what voltage your TV is getting. If you are using a voltage regulator or a surge suppressor, it will also show the input and output voltage. If it marks a voltage of anything lower than 110V or higher than 240V, the TV may not turn on. You need to contact the electricity distribution center to sort out the problem.

If the cable connections and voltage levels are fine, the power cable connector may need to be correctly connected to the TV. Unplug and re-plug it. Also, see if any debris has collected over the port, as it can interfere with the connection. You can use cotton swabs to clean the port and cable connector.

There can be two cases when your TV doesn’t turn on. First, the LED indicator on the TV glows, but it won’t turn on, and next, neither the LED indicator lights nor the TV turns on. In the former case, chances are high that there is an issue with the TV remote that you are using to turn on your TV.

Please check if the batteries are correctly placed and are not dead. You can try replacing batteries and attempt to turn on the TV again. If not, you can also use the power button on the TV panel to turn on the TV. Moreover, if anything is blocking the infrared receiver on your TV or remote, the IR signals can not transmit correctly from the remote and cause an issue. Verify if that’s the case as well.

Please take off your TV from the wall mount or cabinet and remove its back panel with the help of a screwdriver.

Locate the power circuit board. It is the one that is connected to the external power cord. You can quickly identify it once you dismantle the TV.

Once you do that, it’s time to begin the test.

You should first check if the main board on your TV is receiving power from the power supply board. For this, you need a multimeter. Then, you can start the diagnosing process. You need to check the AC input on the power supply board as well as the DC output from the supply board.

The power supply board has two sides: hot and cold. We measure AC on the hot side while DC on the cold side. Be careful with the hot side, as you can get electrocuted.

A blown fuse can cause the power circuit board to malfunction. It commonly blows out when there is a power surge or lightning strikes. To know if a fuse is blown, inspect the thin metallic wire inside the fuse. If there is a gap in between the wire or a dark smoky substance inside the fuse, you can confirm the fuse is blown. In such a case, you need to replace the fuse.

You can even perform a continuity test to know if a fuse is faulty.

The capacitor is the next component that can get damaged in the power circuit board. Capacitors get worn out over time, causing the power circuit board to crash.

So how do you know if the capacitor is bad? Identifying a damaged capacitor is easy. Simply inspect all the capacitors in the power supply board. If you see any of the capacitors bulging from the top or a liquid (electrolyte) leaking from the capacitor, it is damaged.

Replacing a damaged capacitor can be pretty sophisticated, and you need professional help. However, if you want to replace it on your own, you need to get exactly the same capacitor from the market. The rated capacitance, temperature, and voltage of the new capacitor should be identical to the damaged one.

But we don’t recommend replacing the capacitor on your own, as a slight mistake may end up damaging the entire power supply board.

Now that you performed a power supply test and diagnosed the fuse and capacitor, you must have figured out what is causing the power supply board to crash. If you see everything is fine, there is probably an issue with the display panel of your TV.

Display components like the backlight inverter and T-Con board are most susceptible to damage. Or, in the worst-case scenario, the display panel or the main board itself might be blown out. Please consult with a professional to figure out the case. If you find that your display is broken, please consult this comprehensive guide on how to fix a broken TV screen.

If there is massive damage to your TV, and you plan to purchase a new one, please consult this article on what to do with a broken TV.

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