Win8 Press F8 to enter the Safe Mode solution:
Specific steps:
1, press "Win" + "X" shortcut keys.
2, select "Power Options" in the shortcut menu that appears.
3, click the "Select the function of the power button" option.
4, click the "Change the currently unavailable settings" item.
5, at the bottom of the interface cancel fast start and save it.
Close the quick start, press the "Win" + "X" shortcut, select the command prompt (Administrator) option on the shortcut menu, and enter "Bcdedit/set {default} Bootmenupolicy legacy" in the English state and return.
The "Operation completed successfully" prompt appears, indicating that you have successfully set up. Reboot the computer and press the F8 key to see if there is a traditional "safe mode" option on the power-on.
If you need to restore the previous Win8 boot mode, you can enter "Bcdedit/set {default} bootmenupolicy standard" at the command prompt and return.