Graphic Glitch i think :/

[Starrscream]

Okay so here's the problem. 

Im not so pro around hardware fails if it is a hardware fail.

 

First about my computer specs.

 

GPU : Intel® Core i5-4670K CPU @ 3.40GHz

CPU: NVIDIA GeForce GTX 770 2GB

RAM: 8GB DDR3 1600Mhz

Harddrive: 2x Samsung 840 evo SSD

Windows 7 Premium copyright. 64bit

Screen: Phillips 27" LED 272G5DJEB/00 - 1Ms / 144hz (im running with Dvi duel so i can use the 144hz)

Power Supply:is on 560W 

 

Okay, so here's the problem. it happens mostly when i play World Of Warcraft sinse i play that pretty seroius. 

When im done with a loading screen and the screen picture is about to appear it sometimes draw the whole picture like if i would draw it in paint with all kinds og lines/colors and then after 1-2 sec BOOM the picture comes and im ready to play again. That i can live with if it dosent do more than that. But the big problem here is. Sometimes after loading screen the screen just disapears and shows a random color and maybe a little thin withe line in the right side og the screen. 

(i linked a picture of it) 

- Im so frustrated because i sent in my graphic card because it thought that was it, but those i bought it from could not find any mistakes on the card.

I've tryed to reinstall windows on both my Harddrives. and repair my wow client. But it still happens All my hardware is around 1 year old and not more. 

 

I really hope someone has something i can use as help/advice to fix it