Password Bypassing BIOS Recovery

For RD and CSD to debug easilly, AS7000/9300 &TM7510provides 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

AS7000/9300 &TM7510provides 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:

Acer Aspire 5230 Bios

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

Choice what kind of the password to be generated:

0) Exit

  1. Scan code
  2. Upper case ASCII Code
  3. Lower case ASCII Code Enter your choice 2 <- chose 2 XXXXXX


Those passwords are master password. 3. Restore BIOS by the Crisis Disk

Enter this function by Fn+ESC, and Power Button. To use this function, it is strongly recommended to have the coexistence of AC and Batter powers. If this function is enabled, the system will force the BIOS to enter a special BIOS block, called BootBlock. RD/CSD can use this special BIOS code to recover the BIOS to a successful one if previous BIOS flashing process fails. However, before doing this, one Crisis Disk should be prepared in WinXP. Detailed steps are as the followings,

  • Prepare the Crisis Disk in WinXP (Crisis Disk will be released when BIOS V1.00 is released)
  • Insert the Crisis Disk to a USB floppy drive which is attached to the failed machine.
  • On the power-off state, press Fn+ESC and press button. The system should be powered on with Crisis Recovery process.
  • BootBlock BIOS starts to restore the failed BIOS code. Short beeps should be heard when flashing.
  • If the flashing process is finished, a long beep should be heard.
  • Power down the system when Step 3.5 is finished.

If the crisis recovery process is finished, the system should be powered on with a successful BIOS. RD/CSD can then update the BIOS to a workable on by regular BIOS flashing process.

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