New System Not Working

D

Daedro

Weaksauce
Joined
Apr 19, 2004
Messages
87
Hey, I need someones expertise.

I ordered a new ASUS A8N-SLI Premium, AMD 64 3200, and eVGA 7900 GT. I plug it all in (had some issues with the mobo being too big and not having enough screws holes) and boot up. It runs fine, but nothing is displaying. I called ASUS and they figured it was the CPU, or the motherboard having a problem with the CPU, because the mobo would talk saying "no cpu" when cpu was out, but nothing would display and the mobo didn't complain when the cpu was in. So I find out the CPU requires 18A on the +12V line, so I get a new power supply (300W) and try it. Same thing. I'm wondering if maybe it's because it's 300W and the gpu requires 450W, but the comp. store owner says it's true power and it's fine. Also the mobo book says after 10 seconds the computer will beep, and even if it wouldn't display because of the gpu, it should be beeping. Leading me to believe it's still a problem with my cpu. Is that the problem? What else could it be? How do I tell if it's fried? I haven't smelled smoke (and I have my head beside it to check) or heard anything at all from the chips.

Thanks a lot!
 
I have a very similiar system to yours including the same motherboard. CPU's can be DOA but its not very often. I'm sure you've tried reseating the CPU and checked for bent pins and debris inside of the CPU seat on the motherboard... also is your green indicator light on your mobo on..and what about the red EZ plug light...

I also assume that you've made sure your HSF was spinning and attached corectly with the appropriate thermal paste..Also..is your 7900 card plug into the correct pci-e slot...
 
J Macker said:
I don't think a 300w psu is enough for those parts, imo.
Click to expand...
i agree, don't forget that your video card is also drawing power from that 12v line.
 
300w is definitely not enough, get a 480w truepower at the very least. or buy an enermax liberty :D
 
The store owner is a f++kin idiot. You need more juice. Get a new power supply at the very least a 480 and im talking least ( i would never put anything less). I have been known to use 420 but i also used weaker Gpu's and specs.
 
well wattage isn't the only factor in determining if a psu is good enough or powerful enough for a system. from personal experience, a 300w truepower doesn't have enough juice on its 12v rails to handle that cpu and that gpu.
 
True, a 300W Truepower is better than most 300W PSU's, but it is still 300W. Get a nice 450W ish high efficiency modular power supply and things will work.
 
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