Acer Aspire 4715Z Aspire 4315 / 4715Z Service Guide - Page 53

BIOS Recovery If BIOS flash procedure fails in your system, perform a BIOS recovery procedure by using the crisis recovery diskette. During this procedure, the system will force BIOS to load and execute a special BIOS block (also called boot block) to restore the BIOS code from the crisis recovery diskette. Note the following when restoring the BIOS settings: T Use the + hotkey to enable BIOS recovery during BIOS POST. Important: When using the + hotkey to enable BIOS recovery, we strongly recommend the following: t Make sure the battery pack is installed to the system. t Make sure the adapter is connected to the system and plugged into a wall outlet. T A crisis recovery diskette should be prepared in Windows XP/Vista. Perform the following procedure to restore BIOS: 1. Power off the system. 2. Connect a USB floppy drive to the system. 3. Insert the Crisis Disk to the floppy drive. 4. Press and hold + keys, then press the power button. The system initializes the BIOS recovery process. The boot block BIOS starts to restore the failed BIOS code from the crisis recovery diskette. Once the process is completed, the system will restart. After a successful BIOS recovery procedure. RD/CSD can update the BIOS by regular BIOS flashing procedure. Chapter 2 43