GPU or PSU fault?

Mario · 1 Jun 2015 at 18:22

Hi all,
Few days ago my pc started crashing during games
While im in windows,doing simple tasks like surfing on internet or watching movies,no problems,but as soon as i launch game (any game - BF4,Witcher 3,Elite Dangerous) pc crashes,monitor goes into standby as if was there no signal,and any keyboard combination not working at all,helps only reset button,pc crashes only in 3D.
I changed my gpu 1 month ago,so im thinking it might be the source of problem
My psu is old as well Corsair HX750W(bough it in 2011 Dec - but it serves me extremely well so far),specs in my sig

P.S.i only have spare gpu (7950),no psu,and cant get it anywhere - if i swap gpus and if there is no problems,can i be certain that is bad gpu then?

setter · 1 Jun 2015 at 18:29

Try the second gpu to see how it copes. Also, did you do a complete uninstall of all amd drivers prior to installing your new card, (sig says gtx 970). Possible conflict, use DDU to remove all traces of previous driver.

http://www.guru3d.com/files-details/display-driver-uninstaller-download.html

Psu could possibly be suspect, though i ran the system in sig on an hx 850 that was over 6 years old.

Mario · 1 Jun 2015 at 18:48

I reinstalled Windows,clean install,still crashes

Mario · 3 Jun 2015 at 11:34

right,now its even more "funnier"..
after putting old gpu seems pc not crashing - but now after playing few min sound always disappears on whole system,only restart helps - im puzzled now what is broken in my system

and all problems start only when i start games

Danny75 · 3 Jun 2015 at 12:08

Since you mention the sound issue as well, might be an idea to test RAM too. Try just one stick then just the other in same slot. And then do the same in another slot. If you notice a difference, run Memtest overnight to see if it catches any errors.

How are temps? Is the CPU heatsink free of dust?

Mario · 3 Jun 2015 at 12:27

yep,i cleaned pc last week (doing it quite often)
temps: 100% load cpu never goes higher than 54C

BTW - when sound was gone after few min in game i tried to watch youtube videos,and they were on kinda slow motion,or more like 1fps
driving me nuts all those problems

reading other threads make me think maybe its mb ?

Keyboards'Fear · 3 Jun 2015 at 13:21

Do you have an overclock on your cpu or gpu? If so, take it off and see what happens. If there is an OC it could be that one of the MB settings have been set too high