Bought this laptop for Christmas. I have been having this problem since its purchase. The screen randomly turns black and becomes unresponsive. The power button remains on and so does the display's backlighting. The only way to solve this issue is to restart the laptop which is very frustrating when I have unsaved work. This happens multiple times a day. I need this laptop for a project I'm working on, I can't afford to go a week without it, so I can't return it. I've also already upgraded the RAM. When it works this laptop is great though.