Went to play ArmA 2, then screen blacks out. Now when I start comp, the screen blacks after a few seconds

Hi everyone. I recently got an ATI Radeon HD 6780 and for a few hours, it has run flawlessly. I barely ran it hot too.

But when I started up ArmA 2 earlier, it glitched out and the monitor lost signal. I restarted my comp only to see the POST show up and the screen where Windows notifies you of an unexpected shutdown. Then, the motherboard beeps, and a red light appears on the graphics card. At the same time, the signal to my monitor is lost...

Please help. I don't understand. Could the card have failed? The beeps are short, and occur every ten seconds or so.
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More about play arma screen blacks start comp screen blacks seconds
  1. im assuming you got the gpu used? maybe its bad? other possibility could be your power supply. what are the full system specs?
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