In the rare event that the Cintiq Companion crashes, you can reinstall Windows 8:
1. Select “Settings”
2. Select “Change PC settings”.
3. Select whether you want to refresh or reset your Cintiq Companion.
And, if you want to boot into the recovery partition while booting up, please press “F9” (note: update to the latest BIOS to Cintiq Companion first) once you power on the system, Then you can see “Trouble shooting” option under system restoration.