Recently my rig has shut down while under load. When playing pc game or watching Netflix. I have a long hdmi cable running from my n460gtx to my flat screen tv. Everything will be working fine when all of a sudden the screen goes black and the computer seems to freeze. The fans are still running but I get nothing happening so I have to restart. Same happens with games. When I take the card out and hook the monitor to the onboard gpu it does not happen. I have been using the system for three years with the problems being just recent. I have an ocz 600w psu.