So I get a used CUP, A dell GX260 older but okay computer. I went out and bought some RAM and installed it myself no problem, worked fine. Next I wanted a new video card, so I get a VGA Geforce 6600 pluged in into the AGP slot start CPU and download drivers. On re start it said I needed to plug in supplemental power supply for the card to work properly. I turn off computer, open case and the only power plug available is to far to reach and the other end of it is attached to hard drive. I had the bright idea of unplugging hard drive and moving it down to a lower slot in the case so I could also plug in video card. I plug CPU in again and nothing works. It wont boot to the hard drive or to any of the CD/DVD drives. I checked bios and everything should have been fine, alos double checked that everything was connected. It seemed to be. Well I had another great idea to take everything apart and put it back together, and now if I plug in computer it turns on but wont turn off unless I unplug it and there is no video at all. No self test no error message not even a black screen. I dont know how this happened and I fear the worst. any suggestion would be helpful. Thanks.