Asus Eee PC X101H - Manual (Page 36)

Chapter 4: System Recovery 4-2
System Recovery
Ensure to connect your Eee PC to the AC power adapter before using
system recovery to avoid recovery failure.
1. Press <F9> during bootup.
2. In the Welcome screen, click Next to continue.
3. A warning message appears, indicating that all data in your existing
drive will be erased. Click OK to continue.
4. The system starts system recovery automatically and follow the
onscreen instructions to complete the recovery process.