I bought 3 used mining XFX rx580 8gb gts (parts only) on ebay and was able to re-paste and swap fans to get one working as expected. The second will post and run windows but the screen with turn off and on at random intervals when running heaven on any program. This starts about the time the fans turn on with CPU temps <60C and will stop when the GPU is not under load. I have tried maxing out the fan speed (MSI) to keep temps lower, but it still flashes the screen off and on. Drivers are installed properly as the other one works fine. I am not sure what the next step is on trouble shooting. I found info on full system shutdown but not on the screen turning off and on repeatedly. I will try to under-volt to see if that changes things but not sure where to go from here.
System: B85-plus, i5 4690k 4.2mhz OC, 4x4gb ddr3, G-series semi-modular 550w gold,
System: B85-plus, i5 4690k 4.2mhz OC, 4x4gb ddr3, G-series semi-modular 550w gold,