1. I witnessed an unique home built machine. They had bolted the motherboard to the case and no standoffs. Hint? Check that its built proper or why not pull it out of the case and move to just PSU, Motherboard and nothing else. No CPU, RAM, nothing... If I use a metal pen tip on the PWR-ON connector, I see it power up if these two pieces are good.
Place the units on cardboard to avoid shorts.
2. I didn't see if you had a POWER-ON connection to the motherboard. Or if you tried a metal pen tip to see if the power switch was defective.
this is the closest forum relative to my problem i could think of. couple of well versed tech friends of mine are building acomputer for me and came to a problem. the computer won't power up. as in,,,nothing, dead. no spark, no sign of life. they reviewed and triple checked all their steps and came up dumbfounded.
the only thing not done at the time when they powered up was they had not installed a video card,,,,,but they didn't think a Vcard was needed to TEST the computer. they ONLY wanted to power up,,,,that's it. so after that, they unplugged everything except the two power cables to the mobo. they felt this was all that was needed to simply "power up". nothing happened.
question is now,,,,must a video card be installed in order for the unit to simply power up? if not, then the only choice seems to be a non-working power supply or bad mobo.
unless someone here can think of something. as i said, they triple checked all their steps.
abit IS-7. generic 500 watt power supply. lian-li case. plextor, sony, and seagate drives. plextor cdr-rw is master, sony dvd is slave. HD is independently connected. p4/2.8/833