Instruction I:
1. Power off the tablet.
2. Pick up the USB recovery drive and insert it into the USB port.
3. Press'n'hold the Volume Down button. Press'n'release Power button.
4. When the Surface logo appears onscreen, let go of the Volume Down button.
5. Select the language and keyboard layout that you want and select Troubleshoot.
6. Next select Refresh your PC, operating system you want to refresh and then Next.
7. Complete the operation by tapping the Refresh option. Phew! Done.
1. Press'n'hold the Power button.
2. Select Power Off and OK.
3. After a few seconds press'n'hold the Power button again.