Apologies if this is in the wrong forum, but it seemed most relevant here. I had an old Dell Optiplex 150 donated to a student organization. It was stripped down to the motherboard, power supply, and video card. I connected a hard drive and threw in some RAM and am trying to get it to start (unsuccessfully). When plugged in, there is a yellow light on the motherboard. When the power button is depressed, nothing happens. No lights, no wirs, no fans, no hard drive, nothing. I just got the skeleton two days ago, and the department that gave it left it outside the office. It is an upgrade from the board we had, despite my lack of details of model numbers. Any ideas as to what I should try to get it running?