I have a FX-6200 Black edition CPU that is not working. I have narrowed it down to it(switched every computer part even buying a new motherboard) The two motherboards I tried the CPU on were a ASROCK 990FX Killer and a ASUS 970 PRO Gaming/Aura. when in the ASROCK the computer would turn on, fans would spin, internal lights were lit, but there was no video. Couldn't even see the boot screen, no BIOS beep code(I didn't even know what that was). but in the ASUS when I turned on it do as mentioned above, but only for several seconds then seemingly restarts and repeat that process forever.but still had the same problem. I tried getting help at the AMD Forums, but they seemingly have just stopped replying. While I am planning on getting a new FX-8370 or a FX-8350 in the next week, it would be nice if I could get this one working if possible. And the last bit of info I have is it may have been overheating when it started doing this, but I don't remember, it stopped working several years ago now.