Service Forum

lrservicios · Nou Venit Joined: 19 Mar 2011 Posts: 3

Hi!

Im trying to unlock the bios password on a HP Compaq Nc 4010 wich is a centrino model.

This laptop doesnt generate any hash code or error code after 3 wrong attempts so i have to modify / Rewrite the bios eeprom chip.

Can someone tell me where can i find this chip?

Reo51st · Posted: Sat Mar 26, 2011 8:45 pm Post subject:

This works for both NC4000 and NC4010.

Remove main battery and AC adapter.

Remove 2 screws for power button cover.

Remove 1 screw for keyboard.

Remove cover then keyboard.

Disconnect BIOS battery located under the letter "Z".

Let it sit for a few minutes.

Put back together.

Done.

Let us know how things turn out
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Low flying aircraft.
The sound of freedom.

lrservicios · Nou Venit Joined: 19 Mar 2011 Posts: 3

This is not working, i already tried that a couple of times, i need exact chip location so i can rewrite its contents i already have a clean dump.

Reo51st · Posted: Mon Mar 28, 2011 5:26 pm Post subject:

This is for the NC4000 or NC4010 with TCPA.

If you still get Admin Password prompt trying to go to BIOS then it is TCPA locked.

If you try to remove the TCPA card it still will ask for Admin Password.

Removing BIOS battery does not work.

The TCPA board is under the alt key.

Where to go from here I am not sure.

Good luck.
_________________
Low flying aircraft.
The sound of freedom.

lrservicios · Nou Venit Joined: 19 Mar 2011 Posts: 3

This little board is removed!

I dont know how this happened but it still asking for password, i think is storede someewhere else in the motherboard.