Black screen when starting anything gpu intensive.

[Cujjoz]

So whenever I try to start something gpu intensive (Furmark and Games) I get a black screen and no sound. The pc continues running. It will run fine, until I try to start something that requires a little oomph from the gpu. I can watch videos and browse in chrome fine. 

[Godlygamer23]

Is anything overclocked?

[FuzzyYellow]

sounds like a power supply issue. is anything overclocked? also, specs to your machine?

[Agazed]

sounds like a power supply issue. is anything overclocked? also, specs to your machine?

 

If it was a PSU issue, his PC would turn off...

[orangecat]

Right off the bat it sounds like the PSu isn't capable of delivering the amount of current your GPU requires. if you have an extra PSu laying around try that and see if it fixes the problem.

 

Also what PSU and GPU do you have?

[Cujjoz]

No, I had the cpu overclocked to 4.0 but i reverted that before these problems occured.

 

Specs are

 

Intel-4690k

Asrock Z97 Fatal1ty mobo

MSI gtx 970 twin frozr

EVGA 550w psu

 

EDIT: I've had this rig for about a year now and it ran fine until I came home yesterday.

[LNW]

I had a similar issue on a ghetto rigged PC, but it's most likely the power supply. GPU isn't getting enough power.

[Musle]

Sounds like you did an overclock.

 

Maybe you overclocked the Bus speed. ?

 

Or it can be the power supplie that doesn't send much power to the GPU

[Godlygamer23]

@Cujjoz. What EVGA power supply specifically?

[Cujjoz]

Sorry, I was incorrect about the psu. It is actually an 750w evga supernova.

 

Also, I just found something interesting. I turned the psu off and unplugged the powercable and I left it unplugged for about 30 seconds. I turned it back on and now my pc will successfully start a furmark test. I clossed the furmark test, and it instantly black screened again, however.

[Godlygamer23]

Sorry, I was incorrect about the psu. It is actually an 750w evga supernova.

 

Also, I just found something interesting. I turned the psu off and unplugged the powercable and I left it unplugged for about 30 seconds. I turned it back on and now my pc will successfully start a furmark test. I clossed the furmark test, and it instantly black screened again, however.

I would stop using Furmark first off - it puts unnecessary stress on the VRM and it doesn't even guarantee stability at stock or with any overclock. Stick with something more reasonable like games and Unigine Heaven. 

[FuzzyYellow]

If it was a PSU issue, his PC would turn off...

not necessarily, it could just not have enough to power the video card under load. I have a friend who had pretty much the same issue, and it turns out he had a crappy 350w psu with a 650 ti boost.

[Cujjoz]

So the generally consensus is that the psu is bad?