Acer Extensa 5220 Service Guide for TravelMate 5320, 5720, 5720G, Extensa 5220 - Page 134

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. b. c. d. e. f. Prepare the Crisis Disk in WinXP. Insert the Crisis Disk to a USB floppy drive which is attached to the failed machine. 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. 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 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. 124 Chapter 5