I saw on you tube that it is possible to make a dongle to bypass the security bios password, it says to use an old printer cable and by cutting the wires and joining certain numbers together this will allow you to short out the bios security chip.
Could you please let me have the schematics of which numbers to join which numbers
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To recover your bios password you can read here in the HP Omnibook 500 service manual (page 107) where it states you'll need to contact HP and provide proof of ownership and they'll walk you through the process of resetting your password:
-Remove the hard drive. -Remove the keyboard. -Disconnect the reserve battery cable from the system board connector. -Pry the reserve battery free from the system board. The reserve battery is attached to the system board with a piece of adhesive tape. -Remove any remnants of the adhesive tape from the EMI shield.
Make sure all power is off/disconnected and batteries removed before attempting anything like changing parts
in HP > Compaq nx6310 is in a easy to get-to location, but changing it is a pain. Remove your main battery, you'll see a small square of silver plastic in the middle of the compartment. The CMOS battery is underneath of this square.
The battery's connector is on the mainboard, just below the area of the "ALT" key. Unfortunatly, you have to dissasemble the laptop to change it.
There are a number of solutions already on Fixya I think.. so also have a look thru the old postings ....
Ya have to get a BIOS password remover one that works for YOUR BIOS, be it an AMI Award, Phoenix, ... make a win98 boot disk.. copy PW remover to disk... boot up on Floppy... run PW remover.. reboot ya all good.. :)
here are some links though...