Computer Powers on but then Turns off Right Away

[FreeZyTv]

I recently just built my PC a couple months ago with all new computer parts and everything. The problem I am having is that my computer will turn on then turns off right away. It does not stay on for even a second.

It started happening a couple weeks ago after I took my power supply out of this new computer to test my streaming computer because that one was not powering on originally and was doing that same thing my gaming PC is doing now. The things I have tried so far are buying a brand new power supply and new motherboard to see if that would work because Geek Squad at Best Buy said it is either the power supply or a faulty motherboard. Also, I've tried powering on my PC with only one graphics card in and still did the same thing.

I was wondering if it could possibly be something wrong with one of my RAM sticks and should try turning my computer on with one stick at a time to see if it will turn on and stay on?

It is just a real bummer and have no idea what the problem could be because everything is brand new and only have been using this computer since the end of December 2016

Any answers or ideas would be greatly appreciated! Thank You!

Here are both my Gaming PC and Streaming PC specs:

GAMING PC:

-Motherboard ASUS ROG Maximus VIII Ranger
-CPU Intel Core i7 6700K
-Graphics Card ASUS GeForce GTX 1080 SLI x2
-SSD Samsung 950 PRO Series 512GB
-Internal Samsung 850 EVO 1TB
-Liquid Cooling Corsair Hydro Series H100i v2
-RAM Corsair Vengeance LPX 32GB
-PSU Seasonic X-850W
-Tower NZXT Noctis 450 Mid Tower (White)

STREAMING PC

-Motherboard ASRock Fatal1ty Z97X Killer
-CPU Intel Core i5-4690K Devil's Canyon
-Graphics Card MSI GTX 970
-SSD Samsung 840 EVO 500GB
-Liquid Cooling Corsair Hydro Series H100i
-Internal Seagate 2TB
-RAM G.SKILL Ripjaws X Series 16GB
-Tower NZXT Noctis 450 Mid Tower (Black)

 

[R-T-B]

Sounds to me like you have a short somewhere in your case.

I would make sure your motherboard is not touching anything metalic (like, from your case due to lack of standoffs or something) anywhere.

 

[FreeZyTv]

Sounds to me like you have a short somewhere in your case.

I would make sure your motherboard is not touching anything metalic (like, from your case due to lack of standoffs or something) anywhere.

I'll check that out to see if that'll fix my issue. Thanks for responding!

 

[R-T-B]

I'll check that out to see if that'll fix my issue. Thanks for responding!

No problem, good luck!

 

[basco]

R-T-B has a good point here but normally its because too much standoffs or in wrong place which is easy to overlook.
and if thats not helping try stripping down with only 1xvideocard(i see you did that already) and 1x hdd or ssd or 1xram in different slots(ram you could try first as its easy to do)

but you have everything at home to test everything against each other

 

[Evo85]

Check your Corsair H100i and make sure that the pump is working. I had a problem like this a while back and the pump had failed, letting the CPU overheat and shut down almost instantly.

If you put your ear to the heatsink/pump assembly you should hear water gurgling and the pump noise. Or, if you have a spare cooler, try it instead.