EMachines D620 Informations techniques télécharger pdf (Page 98)

108 Chapter 5

Standard Operation Procedures of Password Bypassing and BIOS Recovery

For RD and CSD to debug easily, the system provide one hardware open gap for bypassing password check,

and one hotkey to enable BIOS recovery. As to BIOS recovery, except for BIOS recovery hotkey, you can also

use crisis disk to restore BIOS.

1. Hardware open gap:

RD/CSD can enable or disable this function by shorting the gap. The gap is located as shown.

2. Hotkey to enable BIOS Recovery: Fn+ESC, then Power Button. To use this function, it is strongly

recommended that the AC adapter is connected to the system and plug-in to a wall outlet and the Battery

is also in the system

3. Restore BIOS by the Crisis Disk

Enable this function by pressing the combination: Fn+ESC, and pressing the Power Button. To use this

function, it is strongly recommended that the AC adapter is connected to the system and plug-in to a wall outlet

and the Battery is also in the system. 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:

a. Prepare the Crisis Disk in WinXP.

b. Insert the Crisis Disk to a USB floppy drive which is attached to the failed machine.

c. While the system is turned off, press and hold Fn+ESC, then press Power Button. The system

should be powered on with Crisis Recovery process.

d. BootBlock BIOS starts to restore the failed BIOS code. Short beeps should be heard when flashing.

e. If the flashing process is finished, a long beep should be heard.

f. Power down the system after you hear the long beep.

If the crisis recovery process is finished, the system should be powered on with the successful BIOS. RD/CSD

can then update the BIOS to a workable one by regular BIOS flashing process.

Gap Description

G41 Bypassing Password Check

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EMachines D620 Informations techniques Page 98