Acer Aspire One AO531h Service Manual page 44

Removing BIOS Passwords:
If you key in the wrong Supervisor Password three times, System Disabled displays on the screen. See the
image below.
To reset the BIOS password, run BIOS_PW.EXE as follows:
Key in bios_pw 14452 0
1.
Select one string from the list.
2.
34 Chapter 2