Hi everyone. My rig has been running successfully for about 3-4 years and I have a gtx 670 running. Recently I had this strange thing where the ports on my gtx 670 failed slowly one after the other and eventually my rig wont boot up with the motherboard displaying A2. I removed my gtx670 and connected the monitor to my onboard graphics and it is now up and running. Is my video card dead or is there something else?