If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track. To do this, follow these steps: Open an elevated command prompt.

Click a link below that corresponds to your version of Windows: A "clean boot" starts Windows with a minimal set of drivers and startup programs, so that you can determine whether a background program is interfering with your game or program.

Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features. Select the Download button on this page. In the File Download dialog box, click Run or Open, and then follow the steps in the Windows Security Troubleshooter.

The Protection History page in the Windows Security app is where you can go to view actions that Microsoft Defender Antivirus has taken on your behalf, Potentially Unwanted Apps that have been removed, or key services that are turned off. Note: Protection History only retains events for two weeks, after which they'll disappear from this page.

In search on the taskbar, enter Control Panel and select it from the results. Select Programs > Programs and Features. Press and hold (or right-click) on the program you want to remove and select Uninstall or Uninstall / Change. Then follow the directions on the screen. Need more help?

You set Windows 7 to create System Restore points but notice that your system restore points have been deleted when you restart your computer. You can create new system restore points successfully but those restore points are also being deleted when rebooting Windows.

Microsoft security help and learning. If you suspect that your device may have malware you should have Microsoft Defender run a scan. Here's how to do that on Windows, Mac, or Android.

PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems. It is periodically updated based on customer feedback to help you make the most of your Windows PC. How to open PC Health Check.

First, you'll need to download the troubleshooter. Download troubleshooter. If you see the File Download box when you start downloading, select Run or Open. The troubleshooter provides steps for you to follow. If a program isn't listed in the uninstall options, you'll be asked for that program's product code.

Learn how you can free up drive space in Windows. Keep your PC running smoothly and up to date by increasing the disk space.