How to let WIN10 restore F8 into safe mode channel

Everyone knows, start the computer, press the F8 button before Win10 system enters the Windows startup screen, you can choose to enter safe mode. However, if the user presses F8 and Win10 does not respond, the security mode option cannot be entered. How to deal with this?
1. Click the right button at the start menu, then select [Command Prompt (Manager)]
2. Enter the command prompt (manager) and then enter:
bcdedit set {default} bootmenupolicy legacy
The prompt operation completed successfully. You can restart your computer and try it out!
Test
Restart the computer and press the F8 key.
If you are afraid of missing, you can click and release it until you come out and select the menu and stop.
The menu that comes out, then use the up and down keys on the keyboard to select the safe mode you want to enter, and then press the Enter key.
Entering here can solve the problem that cannot be solved in normal mode.
Safe Mode is a dedicated mode that fixes an operating system failure. Win10 boot press F8, you can enter safe mode, this is a shortcut. If you don't want to restart your computer, you can use other methods to enter Win10's safe mode.