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Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 83
BIOS Recovery
When you boot up the computer and you hear one long beep, followed by a shorter one, the system BIOS is
damaged. This maybe cause by an interruption during a BIOS flash procedure (e.g. a power outage) or a
corrupted BIOS code, which will cause the system to go into an unbootable state.You need to access and
execute the boot block program to reboot the computer and recover the regular BIOS code.
Note the following when restoring the BIOS settings:
• Make sure the computer is connected to a UPS unit during the BIOS recovery process.
• The BIOS crisis recovery disk should be prepared in a computer running the Windows XP or Windows
Vista OS.
Creating the BIOS Crisis Recovery Disk
1. Prepare a removable USB storage device with a capacity size greater than 10 MB.
Note that all data on the USB storage device will be cleared during the creation of the crisis disk.
2. Set up a computer running the Windows XP or Windows Vista operating system and plug in the USB
storage device into an available USB port.
3. Copy the target BIOS ROM file to the USB storage device and rename it as “amiboot.rom”.
4. Unplug the USB storage device.
5. Eject the removable USB storage device from the computer.
Performing a BIOS Recovery
1. Shut down the BIOS failed-computer.
2. Connect the USB storage device containing the “amiboot.rom” file to the failed computer.
3. Press the power button to turn on the computer.
The system will now execute the BIOS recovery process. When the process is complete, four short beeps
will be emitted and the computer will automatically reboot.
4. Disconnect the USB storage device from the computer.
5. Press Delete to run the CMOS Setup Utility.
6. Press F9 to load the system default settings.
7. Select Ok, then press Enter.
8. Press F9 to save the default settings and close the Setup utility.
9. Select Ok, then press Enter.