To repair the corrupted files manually, view details of the System File Checker process to find the corrupted file, and then manually replace the corrupted file with a known good copy of the file. Windows 8.1 or Windows 8. Windows 10, Windows 7, or Windows Vista. More Information.

Security Windows 11 Windows 10. If you trust a file, file type, folder, or a process that Windows Security has detected as malicious, you can stop Windows Security from alerting you or blocking the program by adding the file to the exclusions list. Caution: Only do this for files that you're confident are safe.

Windows 10. Select the Start button, then go to Settings > Personalization > Lock screen, and select Screen saver settings. In the Screen Saver Settings window, choose a screen saver from the drop-down list. Change your screen saver settings.

In the search box on the taskbar, type control panel and select Control Panel from the results. Select Programs > Programs and Features. Right-click the program you want to fix and select Repair, or if that’s not available, select Change. Then follow the directions on the screen. For more tips, see Repair an Office application.

Press Windows logo key + L to lock your device. The selected background should appear on the lock screen. Customize your lock screen status. Select Start > Settings . Select Personalization > Lock screen. Select the list for Lock screen status and select an app that can show detailed status on the lock screen.

Windows 10. Use System restore to make restore points when you install a new app, driver, or Windows update, and when you create a restore point manually. Restoring won’t affect your personal files, but it will remove apps, drivers, and updates installed after the restore point was made. To go back to a restore point:

Windows 11 Windows 10. Select the Network icon on the right side of the taskbar, and then move the Brightness slider to adjust the brightness. (If the slider isn't there, see the Notes section below.) Some PCs can let Windows automatically adjust screen brightness based on the current lighting conditions.

Windows 11 Windows 10. Take a snapshot to copy words or images from all or part of your PC screen. Use Snipping Tool to make changes or notes, then save, and share. Capture any of the following types of snips: When you capture a snip, it's automatically copied to the Snipping Tool window where you make changes, save, and share. Open Snipping Tool.

Press Windows logo key + S or select Search, type pc health check, and select PC Health Check from the list of results. Select Check now. It can take up to 24 hours for Windows Update to refresh your eligibility info.

Troubleshoot screen flickering in Windows. Fix connections to wireless displays or docks in Windows. If your computer is showing a black or blank screen in Windows, these troubleshooting tips could help get your system back up and running.