Windows 7 Toshiba laptop Black screen when I'm on game or facebook!!
 

My laptop..any time rate from ...maybe 30 mins to 3 hours..or so. random time it'll freeze..for like 10 seconds..then it goes black..all black..programs still running..but my screen is black. I can't do nothing but only press power button off then back on..then it keep doing it over and over again....