Hello,
My name is Mike, I’m a Technical Analyst located at Dell corporate headquarters in Round Rock, TX. I’m part of an internet outreach team developed to interact with the online community regarding technical questions and issues that customers face with Dell products. I read your question and wanted to offer some help.
The password that you’re looking at it is a user level set password. It’s to protect the hard drive or the BIOS from unauthorized access to sensitive data or restricted machines. Some employers and IT departments use this to keep their employees from changing settings in the system setup pages on company machines. So as far raybay’s statement: “The computer ending in -595B is a Dell Refurb that has been tampered with by Dell to prevent use of the same services a full version would have. It presents its own difficulties.” I’m unsure of where he got this information, but it’s inaccurate. At any rate, this feature is activated by the owner (or admin) and the password is chosen by the owner (or admin) so my first suggestion, which I’m a bit surprised hasn’t been suggested yet, would be to contact the person who gave you the machine and ask them for it.
As far as the code goes (4xSVQ01-595B), if you can FULLY verify ALL contact information on the machine you can contact Dell and see if the password can be overridden. It's a security feature so I'm sure everyone understands the need for verification before action. I would suggest giving this a shot before attempting to short out your BIOS chip. If you miss with that method you’ll be left with a useless motherboard.
Mike
Dell customer advocate