Some of you may remember my earlier thread, "5 dollar Quicksilver", well that's no longer accurate. You can see by the name of this update thread that the 867 MHz Quicksilver I bought sans hard drive for 5 dollars at a local university surplus property sale has now cost me 55 dollars. Still not a bad price. To recap, I had put a hard drive in the machine once I got it home and it spun right up. But the next day and the entire week following it wouldn't power up at all even after trying all the reasonable suggestions posted by the fine group of readers from this forum. So I took it into the local Apple Authorized Service Center and left it with them for a few days. It powered right up for them as soon as they plugged it in. They did nothing except let it sit for a few days until they had time to look at it. It's still working, even after I installed a larger hard drive in it and have done quite a few application installations and reboots. I'm a little afraid to shut it down but I think it's going to be just fine. I did get something for my 50 dollar diagnostic fee. I learned a couple of things about this Mac. One, the mother board is not the original. Two, the mother board is for a dual processor model but currently has only one processor. I'm wondering if I'd be able to install a second processor. Anyone know? Thanks again to all those who replied.