[Solved] Need help with new build

"So i built my pc i5 2500k with a gigabyte z68xp ud3p and seasonic x 650w psu. My pc starts up and the leds on the mobo turn on, all fans spin, and a few seconds later it turns off and then restarts again. Can anyone tell me what is going on? I dont get anything on my screen or any sounds."

In my opinion, it is most likely an issue with your power supply. It could have a problem, and I don't know how trustworthy of a brand Seasonic is because I've never heard of them. Go for a reliable and well known brand for power supplies like Antec or Corsair. Antec's 620 watt power supply is $59.99 (USD), the Antec NEO ECO 620C 620W. It can also be brought down to $39.99 with a rebate.
http://www.newegg.com/Product/Prod [...] 6817371031

Overall my guess is that your power supply is faulty, or doesn't actually supply 650W of power, maybe 300-400W. Try a new power supply or test it on a different pc.

SeaSonic is a very very reputable PSU brand.

yes i have connected the 24 pin and the 8 pin to the motherboard. The case fan, cpu fan and video card fan all boot up. Then after a few seconds all will shut off and then turn back on.

The video card works because I'm using it again from my old pc. In regards to the PSU it is one of the best top quality psu's around according to the reviews.

could it be the motherboard or cpu as well? And I also get no video on the screen

you might want to invest in a case speaker if you don't already have one, they're nearly free, and can provide critical troubleshooting information when you can't actually get your system up and running.

you should find the beep error codes in your motherboard manual.

sounds like it is the brass standoffs shorting out the motherboard. are there any standoffs without screws in them?

well screw the last one in. it really sounds like it is shorting out. that is what happened to me.

that wouldnt explain the turning off and restarting again.

wouldn't my old motherboard be short circuiting as well? its in the same case with the 8 screws and i've been using it for a few years to date with no problems.

I have tried all of those steps. The only thing I dont have is the motherboard/case speaker, and almost all the pins in the cpu socket are bent. Should I just RMA both the cpu and the mobo?

CPU pins certainly shouldn't be bent. So if possible id get that swapped as a priority.

When you insert the CPU in the socket, very GENTLY place it on, it should require no force at all. Make sure the notches on the sides line up and make sure its resting properly on top of the socket. Then use the metal bar on the side of the ZIF socket to latch it down.

When I placed my build together the bar was very stiff and there was a sound of scraping metal and the socket locked in the CPU. As long as the CPU was correctly placed to begin with however this is to be expected.

Just be extra careful and check a video build guide if your unsure. CPU's are very delicate components.

You should be able to see if the CPU is damaged just by looking at the pins.

Ah yes, apologies im getting mixed up with LGA and PGA CPU's.

Easiest solution really is to get the motherboard swapped out.

If you;ve tested the PSU and various other components with your other build, there's pretty much only the motherboard that could be wrong. You've narrows it down to the root cause id say.

One more thing i haven't asked - What RAM are you using? It could be that your using 1.65v RAM when you should be using 1.5v RAM with a z68 socket 1155 motherboard. <-- Thats about the last thing I can think to try before blaming the motherboard.

Ok so i got the new mobo and i built my pc outside the case and it works beautifully. However when its in the case it turns on for a quick second and then turns back off. The case has to be shorting it. Could it be the metal tabs in the io shield making it short?

What am i supposed to look for? They are all installed properly. Also my old build worked perfectly in there with those same standoffs

I tried using 2 less and it still did the same thing. I'm using my build outside the case while typing this right now. I have no idea what else it can be other than the i/o shield.

With my old build in the case it works fine. So I don't think it can be the standoffs

It does not have the model # or name anywhere inside or outside case. It was a custom built back from 2005. I'm guessing purchasing a new case would solve the problem? Or is there anything else I can do about it?

So I finally got the build to work inside the case. It is definitely not the standoffs. I took out the I/O shield and shorted the power switch and it booted up fine. However, when I connected all the front panel connectors in their proper locations it would turn on for a few seconds and then back off.

It has to be either the I/O shield or the front panel connectors. One thing I notice is that my power LED connector has 2 holes while on the motherboard it has 3.

Best answer selected by josmil1.