1. First, we record the file information that causes the screen to fail to boot, such as: C:\\Windows\\System32\\boot\\winload.exe
2. Then restart the computer. And repeatedly press f8 until the high-level boot menu of the win7 system appears, as shown:
3, then select “ disable driver signature enforcement in the advanced boot menu & enter; Shown:
4. At this point, we can enter the system. We find the file and delete it through the address recorded before. Don't worry, this is the driver file that cannot be verified by signature. After deleting, we can Normally entered the system.
5, Finally, we normally start the win7 system, check the device manager for the device that displays the exclamation mark, and if so, uninstall the driver and reinstall the correct driver.
Many times, when the wireless network card is used for a long time, it will often be dropped and una
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