Practically new game machine won't power on.

[Sp33dFr33k]

I built a new game machine in March of this year. I've used it very little since building it. Today I went to turn it on and there's no power. The lights on the fans come on for 1/2 second and then everything turns off. I don't have another power supply that I can use to test with.

What else can I do to try and diagnose the problem.

My game PC:
A64 3500+, MSI NEO2, 1GB PC3500, 74GB Raptor, 6800GT, TT Tsunami, 520W PSU

 

[HippieCat]

Sounds like something is shorting out.

I would start by removing the power supply and checking for any breaks in the wiring. There is a way to get the power supply to turn on with it out of the case, link here

Second thing is to check the motherboard to make sure it is not grounding out. Did you install the motherboard tray to motherboard standoffs? I have heard a lot of times that people miss this step.


If none of the above works, pull one piece of hardware out at a time till it works.

 

[Sp33dFr33k]

Everything was installed like I build all my machines. I'm very careful. The machine worked fine everytime I used it, I just don't use it much as it's just for PC games. I found another power supply that I can use outside of the case, I should be able to just connect the 20pin + 4 pin and see what happens.

 

[HippieCat]

Forgot to ask, do you have any lighting hooked up? If so, remove it. Found those tripple Laser LED's love to short out, almost lost a system over one of those.