Just got a brand new 15" Macbook Pro for Christmas this year. Recently in the past few days I've been running into this problem. I close the computer, putting it to sleep. When I go to open it back up and use it again, the screen comes on for about a second where I need to enter my password. After about a second the screen then goes black. There is no way to get the screen back on unless I unplug the computer and plug it back in. It's getting very annoying and I'm wondering if anyone else has had an issue like this. I also tried doing software updates yesterday and the mac got stuck during the update. I had to hard reboot it to start using it again. I'm feeling like this mac may be having some problems. Any advice?