As posted in the title, I currently am operating a 2003 (I believe) Windows Vista, I know nearly nothing about the internal workings except that I'm using a Nvidia GeForce graphics card. I can play music, browse the internet, almost anything, but when I launch a downloaded game that is a MMORPG it just, randomly restarts. I can range play time from 5 minutes to 8 hours. I let my computer be away from such games for about a week and it seemed I had more play time in the initial game-play, i got about 12 hours to play before it restarted, then it reverted back to its normal 5-30 minute intervals, Is there any way I can fix it?