I got up this morning and turned on my computer and nothing happened, not even the fan on the p/s turned on. I swapped out the power supply with another that I had and still nothing. I took the original p/s and plugged it in and turned it on (I had it connected to an old pc switch), nothing. I remember reading a thread on a similar subject about p/s's and whether they could run with out a mb. My question is this. I have a mb laying around, it has a cpu and memory on it. If I plugged a p/s into it and turned it on, would that be enough to get the p/s working (provided it does work)? Could this be a result of age (the computer and mb are old (Cyrix 200 and AOpen 5A)) Thanks John Miller Dain Rauscher Information Services - Capital Markets Software Developer Phone: 612-547-7573 Fax: 612-547-7580 IS - Mail Stop: T23A E-mail: MailTo:JMiller2 at DainRauscher.com