New mobo: PC shuts down after 2 seconds (no post) en keeps rebooting on its own. (Extensive details inside)

Voxwork

Reputable
Jul 4, 2014
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4,510
Hi everyone!

First off my PC specs:

MOBO: GA-Z97x-SLI
CPU: 4690k
CPU Cooler: H80i
RAM: Kingston 1333mhz DDR3 2x 4GB
VGA: 7970
PSU: 1000w Cooler Master RS-A00-ESBA

A little while ago I purchased a GA-Z97x-SLI in combination with a i5-4690k.
When I finished installing it (It wasn't my first time assembling a computer) I ran into some trouble.


When I boot the computer with the new cpu-mobo combo it turns on for about 1.5-2 seconds before turning off, and then start rebooting on its own until I forcefully shut it down.
I started troubleshooting: I removed the RAM and would use one stick at a time in each slot to see if I could get the PC to get past post.
Which didn't get any decent results. So now I tried removing parts one by one until it would run stable, which in this case mean getting past the post.


The only time this would work was when I only plugged in my ssd. I even had to detach the case fans. I removed everything altogether, to see if a standoff could be making a short. Which wasn't the case.
I tried removing the CMOS battery. Installed the stock cooler, and then the h80i again. Both didn't do anything. So now the only thing that could be the cullprit should be the PSU. But after reinstalling my old parts it booted up just fine. With everything attached.


Thinking this was a faulty mobo, I RMA'ed it to Gigabyte.


But now when I got it back, it has the same exact problem. So I took it to a friends house and tested some other ram and another PSU. There the mobo ran fine.


The only difference between my older motherboard and the new one, is the cpu psu socket. Older one had 4pins, new one has 8. Which my PSU has a cable for.
I tried using the 4 pin cable on the 8pin socket to see if my 8pin cable was faulty. But this didn't help either.


Is it possible for a PSU to not support newer boards? Did I miss anything?


Any help would be greatly appreciated, I have been breaking my head around this problem for over a month now.


You guys are my last hope!

As I'm from Europe I'll be heading to bed soon, so I won't be able to answer any feedback right now.


 
Solution
Make sure the sticks are in the right slots. Someone the other day found this out, the sticks were in dimm 1 and 3, it wouldnt turn on.

They had to be in dimm 1 and 2

I was going to say, this can happen if the BIOS on it doesnt support the CPU. But if it works somewhere else, it must support it. It needs F5 for it to support the CPU.

But if it works with other ram, it maybe the ram its faulty



Make sure the sticks are in the right slots. Someone the other day found this out, the sticks were in dimm 1 and 3, it wouldnt turn on.

They had to be in dimm 1 and 2

I was going to say, this can happen if the BIOS on it doesnt support the CPU. But if it works somewhere else, it must support it. It needs F5 for it to support the CPU.

But if it works with other ram, it maybe the ram its faulty



 
Solution