From powered off. Battery installed and AC power connected. Press power and immediatly press and hold Alt and begin constant tapping F10(about once a second) while it boots. Should bring up "Starting Acer Ereovery"factory reset screen, select #1
1.Select Restore system to factory default
2. Enter the password (if needed) created when eRecovery was first started.
3. Read the on-screen warning and choose Yes.
4. Click Next. The recovery process will start.