Hi,
- Are you trying to reboot the laptop or reinstall the operating system?
If you want to reboot the laptop, then I would suggest you to follow these steps to reboot the laptop.
a. Click on start, on the right bottom corner you will find a button to shut down with a small arrow towards right side.
b. Click on that arrow, you will find an option to restart the computer.
c. Click on restart.
Azam – Support Engineer.