While using handbrake to rip a dvd. My screen suddenly turn black. i can only see the mouse pointer and can see my desktop. if i close the lid and open again. it back to normal. is this thing normal??? why is it happen??? Is this safe????? I am not so sure. I only know that this happen during handbrake. After encoding for awhile. I leave it encode while away to eat something. 30 min later, i check. the screen is black. The only thing i see is the mouse pointer and nothing else. I try to move the mouse pointer and press dashboard but dashboard does not show. it still black. after i close the lid then it return to normal. please help me..... can some1 please help me?????