Computer building problem

[Snow1411]

Hi, I decided to build my own PC recently and I already ran into a problem during the assembly. I connected everything and tried a test run with just the motherboard, memory, video card, and CPU installed. The problem is, when I plug it in and try to turn it on it wont. When I flip the PSU switch in the back to the on position when it is plugged in it makes a chirping sort of noise and the power LED will blink for a second but then nothing happens. Then when I turn the switch off in the back and pull the plug the chirp and blink will happen again a few seconds after everything is all unplugged. I have tried many different things including removing and reinstalling the CPU, reinstalling the memory, and clearing the CMOS. I'm a first time builder and really need help here. Any help would be appreciated. Could it possibly be the power supply thats bad? My system specs are:

MSI K8N NEO4-F nForce4 Athlon 64 Skt939 DDR ATX Motherboard
AMD Athlon 64 3500+ Processor (Venice) Socket 939
Mushkin 991145 1GB Kit DDR400 SP3200 Standard Performance Memory
ATI RADEON X700 PRO, (256 MB) Graphic's Card

 

[Trifid]

Just get the obvious out of the way.

What PSU do you have? Do you have any wires caught in the fans?

I would of said, listen out for where it is coming from, but sounds dodgy...

You could hotwire the PSU to eliminate it. Get a paper clip un fold it, and connect up the green pin, and any black one.

 

[Snow1411]

Ahh, I did forget to post the PSU... it's the 400 Watt Antec power supply that came with my Antec TX640B case. The chirping seems to be coming from the PSU.

 

[Trifid]

If you are sure its coming from the PSU, than you will have to RMA it, with the company you brought it from. A good company will have you with one in about a week and a half. That is about the average that it has taken for my two things I have sent back. I'm waiting for my hard drive (bloody no corrier services on a the weekend.)

 

[Snow1411]

So how exactly did you say I could test that? I'm very new at all this and I don't want to ruin anything else(if it is in fact blown). What exactly do I do with the paper clip?

 

[Snow1411]

Haha, I figured it out.. tested it with the paper clip and determined it was the power supply. So I got a new one to test my theory and it works! Thanks.

 

[morgster]

Whta do you do with a paper clip? What does it do?