The reason why windows failed to start may be changed

Windows failed to start. The reason may be that the hardware or software has been changed recently. Steps to solve this problem(Recommended learning: web front-end video tutorial)

1. Insert the Windows installation disc and restart the computer

2. Select the language settings and click "Next"

3. Click "Repair Computer"

Provides three solutions:

1. The computer starts up crazy Press F8 to enter safe mode (WIN7). Safe mode should start normally and then shut down. This is how I got it to start normally again = =

2. Use WinPE to start, run CMD (command line mode), and run the following three commands in the C:\windows\system32 directory

bcdedit /set {default} osdevice boot
bcdedit /set {default} device boot
bcdedit /set {default} detecthal 1

It may be a bit annoying. . .

3. Next step: reinstall WIN7 (the slowest and longest time consuming)

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