Acer Aspire 5560 Service Manual page 204

Performing a BIOS Recovery
Boot Block
An interruption during a BIOS flash procedure (e.g. a power outage) can corrupt the BIOS
code, which will cause the system to go into an unbootable state. The BIOS boot block refers
to a special BIOS program that can be used to boot up a system with minimum BIOS
initialization.You need to access and execute the boot block to reboot the computer and
recover the regular BIOS code.
Creating the Crisis Disk
NOTE: NOTE:
The BIOS crisis recovery disk should be prepared in a computer running the Windows
XP, Vista, or 7 OS.
1. Prepare a removable USB flash drive.
Note that all data in the USB flash drive will be cleared during the creation of the crisis
disk.
2. Set up a computer running the Windows XP, Vista, or 7 operating system and plug in the
USB flash drive into an available USB port.
3. Decompress the Crisis Package Source in the USB flash drive's root directory.
4. Eject and reconnect the USB flash drive from the computer, and make sure it contains the
< BIOS.cap > file.
Performing a BIOS recovery
NOTE:
NOTE:
Make sure the battery pack is installed to the system and that the computer is
connected to a UPS unit during the BIOS recovery process.
The function hotkey sequence Fn+Esc is used to enable the BIOS recovery process when
system is powered On during BIOS POST . If this function is enabled, the system will force the
BIOS to execute the boot block program.
To perform a BIOS recovery:
1. Shut down the BIOS failed-computer.
2. Connect the USB flash drive containing the Crisis Recovery disk files to the computer.
3. Press and hold the Fn+Esc keys, then press the power button
The BIOS recovery process begins. When the process is complete the computer will
automatically reboot.
4. Disconnect the USB flash drive from the computer.
5. Perform a BIOS flash procedure to update the BIOS firmware. Refer to the
Utilities" section on page
5-6
2-11 for detailed instructions.
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Jumper and Connector Locations
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"BIOS Flash