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Build my own PC Problem

post #1 of 21
Thread Starter 
So I just "finished" building my PC and when I tried to run it it went on for 1 second than went off and that 5 times in a row or something. So I reapplied the PWR SWT cables and tried it again it ran for 5 seconds. Then I tried something again and now I wont turn it anymore. What could this be? I know it's a little vague but it went on then resets like 5 times or something on off on off etc. Now it won't come on
post #2 of 21
Check if your heat sink is properly seated on the processor
and make sure all your power cables are connected as they should.

Edit: It might be a bit more helpful, if you post the specs of the PC you built.
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post #3 of 21
First thing I would do is make sure everything is seated fully.

Sometimes it's easy to think that RAM or a GPU is installed fully and it's not quite all the way in.
Then make sure all of your cables are in all the way, and double check the wiring diagram with your motherboard. Make sure you have everything plugged into the right spots.

Check that you have all of the motherboard stand offs in the right spot as well, so that nothing is getting shorted out, and make sure your CPU cooler fan is plugged into the right spot!

Pics or more info of your rig would be beneficial. Could be that you have a faulty part as well.
post #4 of 21
Thread Starter 
Ok I will try to explain it as best as possible.

I have

Motherboard: MSI Z87-G45
Processor: i5 4670k
Cooler: Scythe Mugen 4 PCHG
RAM: Corsair LP 1600 2x 4 GB
Power Supply: Seasonic M12II 520W
Case: Corsair Carbide 500R
GPU: GTX 780
SSD: Samsung 840 EVO 250GB

So what I tried is removing the GPU and just connect the 8 pin and the other large cable that go from the power supply in the mb.Also plugged in the SSD with the powersupply in the MB in Sata 1. And connect all the small pins with PWR SWT etc with the motherboard. I put the the power and press the power button nothing happens. I tried booting with a screwdriver still nothing happens.

I also replaced my Power Supply but it still does nothing. I thought that was it (maybe it is really broken) but the new one also does nothing. The very first time I ever tried booting like I said it went on and off for 2 seconds and it kept going like that. Now nothing happens even with the new power supply. Am I missing something? Im 100% sure the processor is correctly mounted and the RAM also it all click. I did forgot to remove the protecting case from the processor but it flipped automaticly off when I tried putting the pin in.

I really really hope you can help me with this cuz it's driving me crazy not knowing what is wrong
post #5 of 21
Did you use standoffs under the motherboard?
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post #6 of 21
Thread Starter 
Yes I did. It had 9 slots and 6 were installed and the other 3 at the top were build
in the case (the 500r). Those aren"t regular stand offs but like a little hill. It cant be remover and tilts the mb to the same lenght as the other stand offs. It just fits and it"'s on the right heighy
For the i/o shield. Its just weird that it worked for a few seconds and stopped
post #7 of 21
Quote:
Originally Posted by shilka View Post

Did you use standoffs under the motherboard?

^This

Quote:
but it flipped automaticly off when I tried putting the pin in.

What exactly does that mean? Did you try clamping down the cpu with the plastic case on it?

EDIT: Do you have anything behind the mobo that is touching it besides the standoffs?
Edited by john1016 - 11/21/13 at 11:01am
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MINE
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post #8 of 21
The only other thing i can think of then is either you forgot cooling paste on the CPU cooler

Or the cooler is lose

Or worst of all a broken/bent pin on the CPU socket itself

Since you tried another PSU it cant be that
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post #9 of 21
Thread Starter 
I doubt the cooler is loose. I installed it properly. The CPU really doubt it is damaged as it did went on and off. It's something like short cut or something. I did apply cooling paste.

Here are some pictures.







Nothing is touching the motherboard right?

This is so frustrating
post #10 of 21
I recently did a build for a mate (very similar to yours) where the exact same thing was happening. We had a light on the mobo that would give us codes that indicate where the problem lies which made things a little easier to troubleshoot. Turned out to be a faulty mobo that would only boot with one RAM stick in. As soon as there were two it would fail.

Try booting with one stick of RAM at a time. If it boots, try the other stick and see how that goes.
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