Try using the password - Compaq
No luck - To erase the BIOS password follow these steps:
Turn OFF the computer and unplug the power lead.
Find a jumper on the motherboard, 3 pins labelled something like CLR_PSWD1.
Move jumper from 2-3 to pins 1-2. (opposite pair).
Plug the power lead back in and turn ON the computer.
Hold down the F10 key during the startup process to enter the BIOS setup to change or clear the password.
After changing or clearing the BIOS password, remember to reset the jumper to pins 2-3.
Steve K, August 2008