hi i have been having this problem for a while now. my computer is pretty old and just the other day i restored it to the "brand new" setting thinking it would resolve this issue.... well it hasn't. every time im on my computer and i run a few programs the computer will make a noise and the screen will turn black. it seems as if the computer is still on but the screen wont budge. i have to restart it by hand and repeat the process over and over. please help