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quickie: is my problem blown motherboard or psu?

P

pufftissue

Member
Hi, would appreciate a quickie help before I go buy new psu.
I modded the antec aria psu with a nexus 120 mm fan.

I turn on computer, mobo light is on (asus p4p800-vm), and cpu cooler turns, nexus fan turns. hard drive led on. power light is on, just no video.

please help.
i have reseate every component imaginable and still nothing.
i may have smelled a burnt smell faintly very briefly.
thanks
 
Well if it looks like a broken PSU, which it does, then I would try another and see if it fixes it. If it does I would not fiddle with it like this one.
 
So a dumb question would be: if my motherboard light is on, and the psu fan spins, and the cpu cooler fan spins, why would the psu be the broken thing?

I still don't get power to the keyboard, but I think I hear the hard drive spinning, but no power to the dvd burner.

Thanks
 
Exactly what I recently went thru. Also, with power supplies, you get what you pay for. Might I ask exactly what kind of system this is?


Originally posted by: ohnnyj
It may be getting power but not enought to allow it to boot.
Click to expand...

 
It's an antec aria with the stock 300 watt psu. I substituted a nexus 120 mm silent fan for the fan included in the psu; apparently the fan still turned, so i didn't mess it up as far as I know.
I suspect it's the motherboard. How it shorted out I have no idea.
 
before you order a new PSU, strip the system down. Just the processor, one stick of ram and the boot harddrive. (actually, the boot harddrive is optional).
The second thing would be to find a video card that's known to work (this does have an AGP slot on it right?). Then try that and see if you can isolate the problem (if you can get video through the card then you know it's not the power supply).

The burning smell definately sounds like a fried power supply, but try all the options before you go out and get a replacement.

Just as a note, I had a 300W power supply that I actually managed to overload. (Athlon 1800, Ti4200, 2x Optical Drives, 4x Hard drives). When that happened, I would push the power button and get nothing.

A last question: You say your lights come on, can you tell if your system POSTs or boots into windows? (i.e. does your computer still play the windows sound if you let it sit long enough).
 
Hi, Thanks for all the help.

I think it ended up being the motherboard. I stripped the system down to just PSU, a stick of ram, mobo, onboard graphics, cpu.

Even that did not work. Got another psu, and only changing that, didn't work. So, I got another mobo, and now it works. Totally blows b/c I don't know what I did to blow the motherboard, but it's working now.

Thanks
 
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