I was viewing email and my screen started flashing and then went black. I shut down the PC and rebooted. The Dell logo appeared and then just a bright green screen. After a little troubleshooting, ie changing HDMI cables, ports, etc. I unplugged the R9 270 and booted up with the system graphics. Booted up just fine. Does this mean my R9 270 is history.This sucks as I can't afford to pay attention let alone replace an expensive graphics card.