Acer AC4B SM50 KB.I140A.015 用户手册

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Chapter 5

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 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:

Plug in the USB disk.

Launch the wincris.exe program to create a USB Crisis Disk. Click Start to initiate the process.

Select the Quick Format option to format the disk and click Start. Follow the instructions on the screen to 
create the disk. 

Copy the KAYF0X64.fd BIOS file into USB flash disk root directory.

NOTE: Do not place any other *.fd file in the USB flash disk root directory.

To use the Crisis USB key, do the following:

Plug USB storage into USB port.

Press Fn + ESC button then plug in AC power.

The Power button flashes orange once.

Press Power button to initiate system CRISIS mode.

When CRISIS is complete, the system auto restarts with a workable BIOS. 

Update the latest version BIOS for this machine by regular BIOS flashing process.