Password Bypassing & Bios Recovery - Acer Aspire 9300 Service Manual

Password Bypassing & BIOS Recovery
For RD and CSD to debug easilly, AS7000/AS9300 provides one hardware PIN pad for bypassing
Password Check, and one Hotkey to enable BIOS Recovery.
1. PIN pad: To short PIN pad to bypass password check.
2. Hotkey to enabe BIOS Recovery: Fn+ESC, then Power Button, AC+DC coexistence is strongly
recommended.
Bypassing Password Check: If the user has set Password ( power-on or setup password) for
security reason, BIOS will check password during POST or when entering the BIOS setup menu.
However, if it is necessary to ignore the password check, the user may enable short PIN Pad to
bypass password check.
BIOS Recovery: Boot Block is a special block of BIOS. It is used to boot up the system with
minimum BIOS initialzation. The user can enable this feature to restore the BIOS to a successful
one if previous BIOS flashing process fails.
1. PIN pad Location
AS7000/AS9300 provides one hardware Pin pad under the keyboard. RD/CSD can enable this
function by shorting this pad. The Pin Pad location should look as the figure below:
2. Clear Password
PIN Pad: Bypassing Password Check, Keep shorting G3 (2 triangle pad) as above PIN pad and
then powering on the system will force the BIOS to clear Supervisor and User passwords. That
means both the power-on and setup passwords are all cleared.
HDD password clean:
It uses on dos environment. To decode HDD password error code for unlock hard disk.
A\> unlock6 XXXX 00
XXXX -HDD password error code
Unlock6.exe v1.1 2 May 2003
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