White screen after loading heavy games - PUBG - Low games still ok

[Orbunion]

need help 

Spec : I5 4690k - 3.8GHZ 

RAM : 16GB

storage : SSD 256 Samsung evo 850 for OS , 4tb WD GREEN

GPU : Gigabyte 980 TI g1 gaming

 

i have been facing this issue , when i open PUBG ( Playerunknown Battleground) i can load to the loading screen , once i start the game , white/green/purple screen occurs , whole computer hang
2nd test , i tried on FORTNITE , usually i will h ave more then 180 fps . but now i only have 40 fps - 120 fps dropping down up and dow.n . then white screen occurs. 

i tested on lower games like black desert online , i manage throught stayed in on for 24hrs withouth having any hangs

 anyone can help me with this issue? GPU ddied? psu died? or mobo prob ~ . thanks !

[Jasun]

I would try the basic troubleshoots first...

1. Reinstall Drivers

2. Reseat everything that is connected to your motherboard (works sometimes, due to poor connections, etc.)

3. Restart computer? (Sounds obvious, but people don't do that sometimes and usually fixes many issues) 

4. Reset overclocks (if any are present)

[Orbunion]

itried 2nd and 3rd . doesnt work . but reinstaling drivers , im not using and oc , ihavent tried reinstaling drivers . 

temperature on afk 30-35 on load 60-80 heavier the higher it gets, max 88 . if there are any more suggestion do please tell me ! anything will help . thanks bro 

[Orbunion]

i tested with a gtx 1050ti , seems doesnt have any problem . could it be possible my gpu is vaulty? 980 ti referring the errors