Asus Eee PC 900HD/XP - Manual (Page 67)

ASUS Eee PC 5-5
You will lose all your data during the system recovery. Ensure to
back up your important data before recovering your system.
4. Click OK in the Recovery System for Eee PC dialog box.
5. Click Yes to start the system recovery.
6. After the system recovery is completed, eject the Support DVD
from the optical drive and click OK to restart the Eee PC.