如何使用命令提示符修復(fù)Windows 11？1.通過恢復(fù)環(huán)境進(jìn)入命令提示符：通過USB啟動或連續(xù)三次中斷啟動過程進(jìn)入恢復(fù)環(huán)境，然后依次選擇疑難解答>高級選項(xiàng)>命令提示符；2.使用DISM修復(fù)系統(tǒng)映像：運(yùn)行DISM /Online /Cleanup-Image /CheckHealth檢查損壞、DISM /Online /Cleanup-Image /ScanHealth掃描問題、DISM /Online /Cleanup-Image /RestoreHealth修復(fù)問題，必要時可指定外部源；3.運(yùn)行SFC掃描：執(zhí)行sfc /scannow命令以替換損壞的系統(tǒng)文件，確保在DISM修復(fù)后進(jìn)行；4.使用Bootrec修復(fù)啟動問題：依次運(yùn)行bootrec /fixmbr修復(fù)主引導(dǎo)記錄、bootrec /fixboot寫入新引導(dǎo)扇區(qū)、bootrec /rebuildbcd重建BCD存儲。操作完成后，重啟系統(tǒng)驗(yàn)證修復(fù)效果。

If you're having trouble with Windows 11 and need a way to fix it without a full reinstall, the Command Prompt is one of the most powerful tools at your disposal. It works even from recovery environments, which makes it especially useful when Windows won't start normally.

Accessing Command Prompt in Recovery

Before you can run any repair commands, you need to get into the Command Prompt through the Windows 11 recovery environment. This usually involves either booting from a USB drive or triggering automatic recovery by interrupting the boot process three times in a row (by holding the power button).

Once you're in the recovery environment:

• Go to Troubleshoot
• Click on Advanced options
• Select Command Prompt

This opens a command-line interface with admin-level access, allowing you to run system diagnostics and repairs.

Make sure you’re logged into an account with administrator privileges.

Using DISM to Repair System Files

The Deployment Imaging Service and Management Tool (DISM) is often the first step when repairing Windows 11. It checks for corruption in the system image itself — something that SFC alone can’t do.

Common DISM commands include:

• DISM /Online /Cleanup-Image /CheckHealth – Checks if there’s any corruption
• DISM /Online /Cleanup-Image /ScanHealth – Scans for issues
• DISM /Online /Cleanup-Image /RestoreHealth – Repairs problems it finds

You can also use /Source and /LimitAccess switches if you want to point it to a specific Windows image or ISO file.

If DISM fails, try using an installation USB as a source:
DISM /Online /Cleanup-Image /RestoreHealth /Source=C:\mount\windows /LimitAccess

Running SFC After DISM

Once DISM has fixed the system image, it's time to run the System File Checker (SFC). This scans and replaces corrupted system files using the repaired image as a reference.

Run this command:

sfc /scannow

This typically takes 10–20 minutes. Don’t close the window until it finishes.

A few things to note:

• If SFC reports that it found issues but couldn’t fix them, you may need to manually replace files or look into deeper system issues.
• Always run SFC after DISM — otherwise, it might not have a clean image to work from.

Fixing Boot Issues with Bootrec

Sometimes Windows won’t start because of boot configuration data (BCD) issues. In these cases, the bootrec tool comes in handy.

Try these commands one by one:

• bootrec /fixmbr
• bootrec /fixboot
• bootrec /rebuildbcd

These help rebuild the Master Boot Record, write a new boot sector, and reconstruct the BCD store respectively.

If bootrec /rebuildbcd doesn’t detect any Windows installations, you might need to check disk partitions or boot into BIOS/UEFI settings to make sure Secure Boot is configured correctly.

That’s basically how you use Command Prompt to repair Windows 11. These tools cover most common startup and system file issues without needing third-party software or a fresh install. Just remember to run DISM before SFC, and don’t skip checking boot-related commands if Windows won’t load at all.

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