Acer TravelMate 4070 TravelMate 4070 Service Guide - Page 55

BIOS Flash Utility The BIOS flash memory update is required for the following conditions: T New versions of system programs T New features or options T Restore a BIOS when it becomes corrupted. Use the Phlash utility to update the system BIOS flash ROM. NOTE: If you do not have a crisis recovery diskette at hand, then you should create a Crisis Recovery Diskette before you use the Phlash utility. NOTE: Do not install memory-related drivers (XMS, EMS, DPMI) when you use the Phlash. NOTE: Please use the AC adaptor power supply when you run the Phlash utility. If the battery pack does not contain enough power to finish BIOS flash, you may not boot the system because the BIOS is not completely loaded. Create Crisis Recovery Diskette 1. Rename BIOS file of this product to BIOS.wph 2. Copy BIOS.wph file to crisis folder and overwrite the original BIOS.wph file. 3. Insert a blank floppy diskette to floppy drive. 4. Run cs.bat and follow its instructions to create crisis recovery diskette. Recover BIOS from Crisis Recovery Diskette 1. Insert the crisis recovery diskette to the floppy drive. 2. Use AC adaptor power supply. 3. Press Fn and ESC key together for more than two seconds when you power on the system. 4. The system will read the files inside the floppy diskette without backlight. 5. After one to three minutes, the system will automatically reboot. Please do not shut down the system or remove the power supply. 6. After step 1 to 5, you sould be able to recover BIOS already. Then you can see the LCD screen with the backlight is on. Chapter 2 50