Both screens just go black from time to time

HyDrApt

Reputable
Sep 10, 2015
18
0
4,510
Hello all,
Since I bought my 290 Sapphire Radeon OC Edition a few months ago, from time to time (it varies between once/twice a day, from once a week), my PC just seems to faint, and both screens just go blank, but the PC keeps running.
When this occurs I still get sound for like 5 seconds, and then nothing, the sound goes dead.
What can be the cause for this?
It happens most when I'm just web browsing (facebook, twitch), and very very rarely while gaming, once or twice.

System Specs:

i5 4690k @3.50Ghz (Stock clock)
Z97 MSI Gaming 7
290 Sapphire Radeon OC Edition
650W Cooler Master GX
16 GB Kingston HyperX Performance @1666MHz
120 GB Samsung 840 evo
1TB WD Green

Everything runs fine, even gaming, CPU temps are cool.