Well, it looks like I am stuck with this thing for a while. The desktop's pwr supply was toast, as I had thought. The computer will now come on, but will not post. Even with only the MB connected, it won't post, so it looks like the MB is fried also. I'm looking for a new MB,at this point. I do, however have a problem, I cannot locate my Windows XP CD. This means, any updated board I install will cause Microsoft to require that I get a new key before my OS will be permanent on the machine. Since I can't find the CD, I'm looking for the same MB I have. It is an ASROCK socket 939, dual sata2 , with PCI express and AGP slots