When you go to the GeekSquad at Best Buy they charge atleast 69 or up to 200 dollars in some places for a diagnostic and all they do is run some software that finds out where the problem is. I don't have that kind of money and I need a way to find out what is wrong with my computer whether it be a software or a hardware issue.

So I need to know what is the name of this software or anything similar to this that can check both hardware and software issues.

I need diagnostic software and / or hardware to trouble shoot computer hardware and software issues on PCs. I'm looking for any suggestions for what package to get,
I am currently using Window XP, and trouble shoot problems for my family that use a variety of Windows O/Ses

AE is software and a usb to obdII connector that allows the use of a laptop to interface with cars' computers

What is the best (FREE) software that every computer technician should have?

Please list software such as free antivirus, diagnostic, spyware removal, etc. What are the best tools?
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I recently installed Win2K on a friend's computer, but not sure of the video card. It's a Dell Dimension 4700 desktop unit.