On Thu, 15 Oct 2009 09:06:19 -0400, Ed Pawlowski wrote:
Not a home repair, but all of us here use computers. I've been using this a
least once a week and find it helpful and informative, most of all, very
accurate.

http://www.computerpowertest.com/

Although it gives inaccurate results if you don't own the machine in
question.