power up problems

the whitman

New Member
i wouldn't post this if i could have found something explaining the problem, but it's only similar to others..so here it is

i recently put my computer back together, and when i flip the switch on, it will stay on for half a second, and sometimes to about 30 seconds.

set up: amd athlon 64 x2 3800+
2x nvidia 7800gtx's
asus a8n32 sli deluxe
2x 250gig sata drives
650 watt coolmax power supply
2 gigs of corsair xms
a few lucky times i have been able to get to the bios and mess around for a few seconds before it shuts off, but really to no avail. the hard drives are from my old computer, but it won't stay on long enough for me to reformat them. my mobo doesn't beep at all, and the green power led wil stay on. i'm going to put it together on a bunch of anti-satic bags. any questions to help this problem will gladly be answered, and any advice would be appreciated.

note: this same set up was used in my old computer except i just have a different motherboard and processor, and it ran like a champ
 
Ok, I had this problem too.

I worked it out to having too many things plugged along the one line of the Psu's 4 pin power things.

Like, on the one line, i had 2 fans, and 2 hard drives,To fix it, i evened out the load of each of the Psu's power line things.

Here is what im talking about:
www.coolgear.com/images/wqer23ss3.jpg

The plugs Left and Right are what im talking about, NOT THE CENTRE ONE.

Try evening out the load on each cable

Heres a picture of the plugs im talking about

I just evened them out,
 
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