SCREEN FLICKERING/FLASHING on R9 390 since more than a week I have been facing screen flickering issue on my Sapphire r9 390 which is accompanied by device attachment/detachment sound. This flickering even persists when i remove all of my usb devices(keyboard, mouse) and I have tried changing my VGA cable along with hdmi to VGA converter. I have tried upgrading my software to the latest driver available and tried few old versions of the drivers. At that time I had Windows 10 Pro as my operating system. I reinstalled Windows 10 and upgraded it to the latest version in an attempt to solve this issue. The only step that seems to solve this issue is disabling the AMD Radeon R9 390 Series display adapter from device manager. I thought this could be a Windows 10 problem and on 10th june I reverted back to Windows 7 Professional, however I am facing the same issue. Even In Windows 7 the problem would only be resolved when i disable the AMD display adapter from device manager. (Disabling Intel HD Graphics 4600 only doesn't solve this issue). The screen flickering is not continuous, It is random, usually starts within 30 minutes of bootup. As it starts occurring, I disable AMD adapter for few minutes and re enable it. This usually resolves the problem until sometime. The possibility of bad HDMI Output of my gpu is also ruled out as screen flickering occurred even when I connected my LCD to motherboards VGA output(while my gpu adapter was enabled). Also I do not overclock any of my system's components. System Configuration: Motherboard: GA-H97 HD3 CPU: Intel i7 4790 Memory: Kingston 8GB DDR3 GPU: Sapphire R9 390 VBIOS: 113-2E3240U-X4A Driver: Crimson 17.6.1 OS: Windows 7 Professional (version 6.1 build 7601 SP1) Monitor: Samsung SyncMaster 943SNX Plus One important thing, while I was on Windows 10 and i used to disable AMD graphic adapter from device manager, somehow graphic card would still provide display but screen flickering would stop. This is confusing as I have tried different operating systems and different version of graphic drivers so it doesn't look like software issue. But if it is hardware issue, shouldn't there be screen flickering even after disabling the graphic adapter from device manager?
To be sure that the flickering issue is caused by GPU just remove it and use temporarily Intel integrated graphics. If no flickering try to remount your gpu again, update mb's bios, clear cmos (and eventually clean install with official iso - suggest win10 creators update). If still flickering mobo or display is the issue. Let me know.
you are losing video signal integrity with your monitor. Since you have changed the cable, then it's with the VGA port on the monitor, or with the circuit board the port is connected to internally. Old monitor is old. The reason it doesn't flicker when using Windows basic driver, is because the bandwidth load is a lot less, and probably not using the pinout that is marginal.
I've had my GPU installed in a completely different system and It's still causing flickering issues. It is definitely a hardware issue so I am going to RMA it soon. Thank you for your help.
Good luck on your RMA. I found them to be straight-forward, but the initial setup for an RMA request is a little bit lolwtf being all done via email.
