Computer start up problem

[Bill Kunert]

For the last couple of days I've had to unplug the power cord on my computer and turn it on it's side the reconnect power befere it will boot. If I just come up and punch the on button fans and leds come on then go right back off. Just unplugging it and repluggging it without turning it on it's side won't work. Homebuilt, truepower Antec 400 watt, Abit KN8-SLI, A64-3500+ overclocked, BFG 7600GT OC overclocked, WD 250gig SATA, 1.5 gig Corsair Value Ram and 2 dvd recorders. Any ideas?. Once booted up everything works just fine. It will reboot with no problem but if I shut it down for even 5 seconds I'll have to unplug, turn on side, replug and restart. Thanks for any help.

 

[myocardia]

It definitely sounds like power supply problems to me, although, have you reseated the video card, and RAM yet? I'd start with that, then see about replacing that Antec.

 

[moosey]

Originally posted by: myocardia
It definitely sounds like power supply problems to me, although, have you reseated the video card, and RAM yet? I'd start with that, then see about replacing that Antec.

Sounds like a PSU to me as well. At least its a cheap fix for that ~$45.

 

[Jiggz]

Could be a PSU but could also be a short component on the mobo to the case. Dismount the mobo and ran it outside the case on top of a cardboard box. With everything in the upright position. If the system rans, then it is a mobo shorting to case problem. If it still won't ran except with the case (PSU installed) on its side, then you know it is the PSU. Basically, you're just trying to isolate the problem without having to buy new components.