my graphics card is stuck at using 98-99% load. but its not running anything. im playing nothing at all. its a gigabyte 460gtx. and because its using so much its stuck at 60C idle. My cpu usage is really high up there too. I've tried restarting. Shutting down. This has never happened before but now i can't get it to go back down. anyone ever had a problem like this before? what should i do?