My display turns off randomly while using graphics card, sometimes it takes only 10minutes and rarely 1hr. I can hear the computer still running when display turns off(lights are also working). Also my friend has tried the card on his computer and it worked fine.
Tried different cables(HDMI AND VGA) and monitors. Downloaded and unistalled drivers many times. Used MSI Afterburner to see that its not overheating or overclocked. I am using Windows 8.1 now.
CPU: AMD A-Series A10-7850K X4 SFM2 BOX AD785KXBJABOX
CPU Cooling Fan: COOLER MASTER HYPER 212 EVO
Motherboard: Asus A88XM-PLUS
RAM: Kingston 8GB DDR3 PC14900 CL10 DIMM HyperX Fury Black Series KIT OF 2 HX318C10FBK2/8
Graphics Card: AMD Radeon R9 380
Power Supply: Fractal Design ATX 2.4 Integra M 550W FD-PSU-IN3B-550W-EU
Hard Drive: Western Digital CAVIAR Blue 1TB SATA 7200RPM 64MB WD10EZEX