1, turn on Dell computer and start win 10 computer. Click (Settings) in the Start menu.

2. Click (Update and Security) in the (Settings) interface of the computer.

3. Select the (Restore) menu option in the window.

4. Select the (Start) button, and then click Select.

5. Finally, click the (Next) option to enter the reinstall the system step of Dell computer, and the problem will be solved.