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5 Ways to Fix a Windows Computer Screen That Doesn’t Turn Off After Set Time

Windows 10 will turn off the screen after a certain amount of time, allowing you to rest without turning off your device or going to sleep. In addition, it can keep your information from prying eyes and save some power if you are using the laptop without the charger plugged in.

If that doesn’t happen on your Windows 10 PC and the screen stays on, there may be a problem with the settings. This guide tells you which settings you should change so that Windows turns off the screen after the set time.

1. Check Power & sleep settings

Power & sleep is the first setting that you need to check. Here’s how you can do it:

Step 1: Click Start, then go to Settings > System.

Step 2: From the left, select Power & sleep.

Step 3: Check out the Screen section.

Step 4: If the options are set to Never, you need to adjust them again. You can set options when the laptop is on battery power or when the computer is plugged in.

Check Power & sleep settings
Check Power & sleep settings

After you have changed the Screen settings, look at the Sleep settings. Although you can turn on your laptop or PC while the screen is off, it can create conflicts if the Sleep settings are not appropriate.

To avoid any problems, make sure the On battery power, PC goes to sleep and When plugged in PC goes to sleep after options are set to Never.

2. Run Power Troubleshooter

The computer screen that does not turn off after the set time indicates a power related problem. This is why running Power Troubleshooter can fix the problem. Here’s how you do that:

Step 1: Click Start, then go to Setting > Update & Security.

Step 2: From the left, select Troubleshoot.

Step 3: Click Additional troubleshooters and scroll-down Find and fix other problems.

Step 4: Click Power > Run the troubleshooter.

Step 5: Follow the on-screen instructions to troubleshoot.

Chạy Power Troubleshooter
Run Power Troubleshooter

3. Search for apps running in the background

An app can keep running without you realizing it, and it prevents your device from turning off the screen or going to sleep. For example, the Windows 10 assistant, Cortana, can continue to be activated by certain keywords. Also, if you have open cloud storage or any other online sync application running, you should close it.

The best way to fix this is to check the Task Manager:

Step 1: Right click on the taskbar and select Task Manager.

Step 2: Select Processes tab.

Step 3: Select an application and click End task.

Search for apps running in the background
Search for apps running in the background
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4. Check the advanced power settings

If you are copying a large folder from your device to an external USB and the screen does not turn off after the set time, you need to look into the advanced power settings:

Step 1: In the Start menu search bar, find Control Panel and select the best match.

Step 2: From the View by menu, select Large icons or Small icons.

Step 3: Click Power options > Change plan settings > Change advanced power settings.

Step 4: In Power Options menu, go to Multimedia settings > When sharing media.

Step 5: Select Prevent idling to sleep for On battery and Plugged in.

Step 6: Click Apply > OK.

Check the advanced power settings
Check the advanced power settings

5. Examine Peripheral Devices

When USB devices keep disconnecting and reconnecting, they prevent Windows 10 from turning off the screen. You can fix this problem by unplugging all USB devices like a keyboard, mouse, external hard drive, etc. and checking if this solves the problem. If this fixes the problem, connect your devices one by one to find out which USB device is causing the problem.

In the event that the problematic USB device cannot be identified, it is recommended that you run the Windows 10 troubleshooter. As it may take a while to run the individual troubleshooter for the keyboard, Bluetooth, or printer, then you should use the Hardware and Devices troubleshooter.

Follow these steps:

Step 1: Open Command Prompt with admin rights.

Step 2: Type:

msdt.exe -id DeviceDiagnostic

Step 3: Press Enter button. This will open the Hardware and Devices troubleshooter.

Step 4: Click Next to begin the troubleshooting process.

Examine Peripheral Devices
Examine Peripheral Devices

Note: A malfunctioning USB port can also cause this problem.

Good luck with your troubleshooting!

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