Acer ZX4830 Series, Service Manual

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162 Chapter 5
BIOS Recovery
This section provides the standard operating procedures for BIOS recovery.
BIOS Recovery by Crisis Disk
BIOS Recovery Boot Block:
BIOS Recovery Boot Block is a special block of BIOS. It is used to boot up the system with minimum BIOS
initialization. Users can enable this feature to restore the BIOS firmware to a successful one once the previous
BIOS flashing process failed.
BIOS Recovery Hotkey:
The system provides a function hotkey: Fn+Esc, for enable BIOS Recovery process when system is powered
on during BIOS POST. To use this function, it is strongly recommended to have the AC adapter and Battery
present. If this function is enabled, the system will force the BIOS to enter a special BIOS block, called Boot
Block.
Steps for BIOS Recovery from USB Storage:
Before doing this, prepare the Crisis USB key. The Crisis USB key could be made by executing the Crisis Disk
program in another system with Windows XP OS.
Follow the steps below:
1. Save ROM file (file name: JAL90x64.fd) to the root directory of USB storage.
2. Plug USB storage into USB port.
3. Press Brightness up + Brightness down + Power button to initiate system CRISIS mode.
When CRISIS is complete, the system auto restarts with a workable BIOS.
4. Update the latest version BIOS for this machine by regular BIOS flashing process.
Steps for BIOS Recovery by Crisis Disk:
Before doing this, a Crisis Diskette should be prepared ready in hand. The Crisis Diskette could be made by
executing the Crisis Disk program in another system with Windows XP OS.
Follow the steps below:
1. Power Off failed system.
2. Attach a USB floppy drive to the failed system.
3. Copy xxxxx.wph to tool's folder and rename it as BIOS.wph.
4. Execute wincris.exe to start the Crisis Disk Build.
5. Select Removable and click Start.
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