Hello, Pupu!
Have a nice day!
You can refer to the following steps:
1. Click the self-help console button to open the self-help console.

2. Press Shift and F8 on the keyboard at the same time, and click the mouse to restart the desktop cloud.
3. Enter the Windows 10 advanced startup screen and select Troubleshooting.

4. Select Advanced Options.

5. Choose Startup Settings > Restart.

6. After the restart, press 4 or F4 to enter the safe mode.

Hope this helps!