1. Select "Forcing driver signature": press Enter directly in the interface that prompts "Windows cannot start, maybe the hardware or software has changed recently ...".

Then press "F8" according to the prompt to enter the advanced startup option configuration (or press F8 to restart), then select "No Driver Signature" and press Enter to see if you can enter the system normally.

2. Select "Last Correct Configuration (Advanced)": Enter directly in the interface that prompts "Windows failed to start because of recent hardware or software changes ...".

Then press "F8" according to the prompt to enter the advanced startup option configuration (or press F8 to restart), and then select "Last Correct Configuration (Advanced)" and press Enter to see if you can enter the system normally.

3. Enter "Safe Mode": at the prompt "Windows failed to start, the reason may be that the hardware or software has changed recently ...", press enter directly, then press "F8" according to the prompt to enter the advanced startup option configuration (or press F8 to restart), then select "Safe Mode" and press enter.

Check whether it can enter the system normally. If you can, open the device manager (->-click on my computer->; Properties-> Hardware-> Device Manager) sees the yellow or exclamation point, deletes it, and uninstalls the recently installed suspicious application.

4. Reinstall the operating system: If you still can't start normally after using the above methods, you can reinstall the system directly.