You can try what the guys say above by dismantling your notebook and shorting the bios chip  ... or you could download asset.com, copy it to a startup disk, boot into dos and run it with the relevant switches.

ASSET -- Version 2.09 (C) Copyright 1993-2004 Dell Inc.
Usage:
ASSET new_asset_tag Specify new asset tag
ASSET /d Delete asset tag
ASSET /o new_owner_tag Specify new owner tag (if applicable)
ASSET /o /d Delete owner tag (if applicable)
ASSET /? This is a help screen Usage:

You can try what the guys say above by dismantling your notebook and shorting the bios chip  ... or you could download asset.com, copy it to a startup disk, boot into dos and run it with the relevant switches.

ASSET -- Version 2.09 (C) Copyright 1993-2004 Dell Inc.
Usage:
ASSET new_asset_tag Specify new asset tag
ASSET /d Delete asset tag
ASSET /o new_owner_tag Specify new owner tag (if applicable)
ASSET /o /d Delete owner tag (if applicable)
ASSET /? This is a help screen Usage:

Nessus Recomendation is better cause it doesn't involve any 'hard' damage to your notebook. By mingling with Jumper sometimes it can cause ya other problem. reminder, you are dealing with notebook not desktop so always take precaution on what you do. Good luck and show us the result later

Exactly which password do you want to clear? There are the grey screen password, the bios lock password and also your Windows user account password. For the first 2, you can try your luck by calling Dell or you could try following instructions given by http://homepage.ntlworld.com/judslat/paragon/. Note that information on the site might require you to dismantle your notebook and there's always a risk of damaging your notebook if you do something wrong.