I have a Sapphire 4850 in an Antec 300 with a PCP&C 500 watt ps both are barely over a month old, and everything has been running very cool. I was playing a game today and the comp made a horrible beep and the 37 inch tv i play on came up with no signal. I switched to hdmi and nothing,put in an older card and everything was fine, I checked for any events and nothing. I removed the drivers put the card back in and again nothing. I am at a loss dont really know what to do next,any help or advice would be great. Thanks...