Asus Eee PC 904HA/XP - Manual (Page 70)

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