Symptoms. Consider the following scenario: You have a computer that is running Windows 8, Windows Server 2012, Windows 7, Windows Server 2008 R2, Windows Vista, or Windows Server 2008. The computer is operating under a heavy load. You try to run the Taskkill.exe utility to stop a process.

How to open PC Health Check. In Windows, use Search on the taskbar to search for “PC Health Check,” then select it from the list of results. If a PC Health Check update is available, you can quickly install it for the latest version.

If the steps above don't work, you may need to reinstall Windows. For more info, see Windows 10 recovery options. Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista.

Need more help? If you can't find an app or program, try the tips in See all your apps in Windows 10 and Program is not listed in add/remove programs after installation. If you get an error message when you're uninstalling, try the Program Install and Uninstall Troubleshooter.

Windows 11 Windows 10. To adjust power and sleep settings in Windows 11, select Start > Settings > System > Power & battery > Screen and sleep. Screen: Select how long you want your device to wait before turning the screen off when you're not using your device.

Windows 11 Windows 10. Do you need some help installing Quick Assist? For the best experience, download and install the new version of the Quick Assist app from Microsoft Store. If you have problems installing Quick Assist, here are some steps to try to get it installed and working properly. Install the new app. Open the new app. Pin Quick Assist.

Windows 11. You can choose which apps will start when you log in to your Windows device. The apps might show in your taskbar or elsewhere—or the apps might start behind the scenes. You can see how much impact each of the apps would have on your startup experience. No Impact: Startup app is disabled.

Windows 11 Windows 10. If your PC is running low on free space, you might not be able to install important Windows updates, and your PC’s performance may be affected. Here are some ways to free up space so you can keep your PC up to date and running smoothly.

Windows 11 Windows 10. If your Windows device is running low on storage, here are a few ways to free up some drive space. Windows 11 Windows 10. Delete files with Storage Sense. Select Start > Settings > System > Storage . Open Storage settings. Turn on Storage Sense to have Windows delete unnecessary files automatically. Delete files manually.

Windows 11 Windows 10. If your system is asking you for your BitLocker recovery key, the following information may help you locate your recovery key and understand why you're being asked to provide it. Important: Microsoft support is unable to provide, or recreate, a lost BitLocker recovery key. Where can I find my BitLocker recovery key?