New computer, keep restarting?!

[un655]

Ok I need your help guys, I just built a new computer and when I turn it on, the fans and everything else runs but after about 5 seconds it turns off, the turns back on. It keeps on doing this until I finally turn it off. What could be my problem? The power supply? Motherboard? Any help is greatly appreciated.

 

[str8lazy]

Try swapping out the motherboard first(if available), and then try another motherboard(if available).

 

[Richard]

just a guess - maybe a bad power supply?

 

[un655]

Yeah I thought about the power supply too but I put another one in there and it did the same thing. I'm going to try to buy another motherboard tomorrow.

 

[un655]

Now my computer has totally stopped powering on for those few seconds, now when I press the power button there is a low buzzing sound coming from the processor...could my processor be the problem or my mother board?

 

[zero1424]

Reseat everything, maybe you messed up when building it.

 

[un655]

Ok I took everything apart and started putting it back together again. I can have everything powered up and going but when I connect the power supply to the 12v connector for the CPU is when it starts rebooting itself. What's going on? Is there anyway I can fix this?

 

[str8lazy]

Probably not, either the connector part on the PSU is dead or the connector part on the motherboard is dead. And you said that you already switched the PSU, so I would guess motherboard next, and if that doesnt work than your processor is faulty.

 

[un655]

Do you think a better PSU would work? The one I have came with the case. And the other PSU I tried was only a 300w

 

[un655]

I got a 350 Antec Power supply and now everything runs even with the 12v connected but nothing is displayed on the monitor..