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Unlocking the Hard Drive
To regain access to your computer if you lose the HDD password, you need to generate a master password
and unlock your hard drive.
To unlock the hard drive:
1.
Open the computer in a DOS environment.
2.
Type the following command:
A\> unlock6 XXXXX
3.
Press Enter to display the command options.
4.
Select option 2 (upper case ASCII code), then press Enter.
5.
Write down the generated master password.
6.
Reboot the computer.
7.
In the HDD password prompt, type the master password generated in step 4, then press Enter.
BIOS Recovery
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. 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 battery pack is installed to the system and that 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 10MB.
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.
Decompress the Crisis Package Source.
4.
Select WINCRIS.EXE and then select Run as administrator.
5.
Keep the default settings and then click on the Start button.
6.
When the pop-up warning dialog box appears, click OK to create the crisis disk.
7.
Click No if you do not want to create another crisis disk.
8.
Eject and reconnect the USB removable storage device from the computer, and make sure it contains the
following three files:
•
BIOS.wph
•
MINIDOS.sys
•
PHLASH16.exe
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Acer Aspire 3935 Service Guide
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Troubleshooting
