Brand new MacBook Pro, less than 1 month old. I immediately upgraded to Yosemite, I'm currently at 10.10.1, and this is only occurring when I wake from sleeping like overnight. After a few seconds, the cursor is happily blinking at me in the login box, but, it will not respond to input, and the mouse will not respond. After several seconds, the screen goes dark. I then have to press the power button, wait a few seconds, and then I can enter my password, and everything wakes up. I've tried a PRAM reset, and am currently running a factory configuration save the upgrade to Yosemite. I've only installed a few apps such as Chrome and Adobe Reader. Thanks in advance for any suggestions.