For Vista and Xp add run as an administrator.
Method n°1 :
1. Download Partedit32 launch the program and change the type of the partition pqservice from 27 to 7.
2. Restart the computer press F2 on boot to enter the bios, and then disable the option (d2drecovery).
3. Restart and press F8 several times until you reach the Windows recovery menu, choose the option : command prompt. The windows open and now there is a letter for a new drive, x for example.
4. Type "dir" and seek the file "aimdrs.dat". Then type this command at the prompt : "Copy aimdrs.dat C:"
5. Restart your computer normally, open a notepad browse for your file open it and recover your password. Do not forget to restore your partition pqservice in its initial state with partedit32, and to reactivate the D2D recovery option in the bios.
Method n°2 :
With a Linux boot CD make :
1. Cd /mnt
2. mkdir acer
3. mount - T vfat /dev/hda1 /mnt/acer
4. cat /tools/aimdrs.dat
Here is your password.
Warning : for more recent laptop with SATA disc replace "hda1" with "sda1".