Computer Freeze MSI GTX 970 only in games

Hello guys,

I'M having trouble benchmark testing or either playing any games with my MSI Gtx 970. I can play games like 30 seconds to 3 minutes and it freeze the whole comp. I have tried like 30 times same result. Than I'm having trouble turning on my PC too. It keeps restarting itself like 5 6 times then it works.

Even If I try to run my comp specs on systemrequirementslab, my computer keeps freezing. If I dont have to do anything with the graphic card; my computer runs pretty smooth actually.

I have removed GPU and used MOBO's dvi to tried those and worked perfectly (I mean didn't freeze at least)

I Just bought some of my computer parts and recently changed so they are all new. (mobo & CPU & GPU) I have also done my whole formatting, installed new OS and installed new drivers.

I thought It might be my MOBO's bios so I have also updates that too but still no help.

Can you please help me to figure out if its a hardware problem or not?

My Comp Specs:

OS
Windows 7 Ultimate x64
CPU
Intel(R) Core(TM) CPU i7 4790k
Motherboard
Gigabyte GA-X87Z-UD5H
Memory
8.00 GB ddr3 1600mhz
Graphics Card(s)
MSI GTX 970
Sound Card
(1) Realtek High Definition Audio (2) Logitech G930 Headse
Monitor(s) DisplaysEdit Value
Samsung Syncmaster p2370
Screen ResolutionEdit Value
1920 x 1080
Hard Drives
(1) OCZ SSD 120gb
(2) WDC WD3200AAKS-00L9A0
PSU
Corsair tx850 watt

I tried my ex GPU GTX 295 it doesnt work either
freezing and crashing... which was working fine with my old mobo x58i the rest was same.
Could PSU got old for this new rig? 850w not enough? its from 2009

this how i connect board

anything seems wrong?

Postimage.org / gallery - 20150302 014402, 20150302 014417, 20150302 014428, 20150302 014520


you check the temp from here
http://s13.postimg.org/ok1umy2xj/Untitled2.jpg

Motherboard was the issue here..

I had to take everything to tech service. They told they have seen this motherboard and processor conflict a lot.
Z87X series are not compatible with i7 4790k. As far as what I understood.

They changed my motherbard with Z97X and its running fine so far.

FYI.