Use the System File Checker tool to repair missing or corrupted system files - Microsoft Support. Windows 8.1 Windows 8.1 Enterprise Windows 8.1 Pro Windows 8 More... If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files.

Windows 7. Symptoms. You run an MS-DOS-based program on a computer that is running Windows 7. The program uses the MS-DOS protected mode interface. In this scenario, the program may crash. Cause. This issue occurs because of a change in the Dosx.exe file in Windows 7. Resolution. Hotfix information. A supported hotfix is available from Microsoft.

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This article describes the command-line switches you can use when you run the MS-DOS version (Scanreg.exe) or the Windows version (Scanregw.exe) of the Registry Checker tool. More Information Syntax. MS-DOS Version: Scanreg.exe [/backup] [/restore] ["/comment=<text>"] [/fix] Scanreg.exe [backup] [/restore] ["/comment=<text>"] [/fix] [/opt]

Microsoft Defender Antivirus is a powerful tool that finds and removes malware from your PC. Here's how to use it in Windows 10 or 11 to scan your PC. Important: Before you use Microsoft Defender Offline, make sure to save any open files and close apps and programs. Open your Windows Security settings.

Symptoms. Your Universal Serial Bus (USB) keyboard or mouse may not work after you restart your computer in MS-DOS mode. This problem can occur under either of the following conditions: If USB legacy support is disabled in the basic input/output system (BIOS), or the BIOS does not provide USB legacy support. -or-

Launch the Microsoft Store app. Click Library. Click Get Updates. Click Update or Update All with the results that have been returned. Once you have your Xbox app for PC updated to 2311.1001.7.0 or newer, you can run the Gaming Services Repair Tool with these steps: Launch the Xbox app for PC. Click your Profile picture. Click on Support.

System File Checker is a utility in Windows that checks for problems with files on your computer. To run it, follow these steps: Make sure you've installed the latest updates for Windows, and then restart your machine. To find out more, read Update Windows.

Summary. When you troubleshoot communications problems in Windows, an MS-DOS-level communications program is often required to test the modem and ports outside of Windows. where X is the number of the serial port the modem is connected to or emulating.

Windows includes a tool called Microsoft System Information (Msinfo32.exe). This tool gathers information about your computer and displays a comprehensive view of your hardware, system components, and software environment, which you can use to diagnose computer issues.