my friend's laptop is acting funny. I'll just copy and paste what she texted me "The first time it randomly shut off was a few months back but this rarely happened. Then in the past few days the screen would go black, like while i'm skyping with friends and the screen got or computer were moved at all... i would press the power button and then it was as if it had been in sleep mode but was not off, skype was still running when logging back in. Then it started shutting off and it would turn right back on always or after a few tries. but after turning back on sometimes i would hit a key or click the mouse and it would shut back off. It was working well in class last night but once i got home it wouldn't even turn on" I've run an apple hardware test on it and it passed without issues. I'm running the extensive test on it now. Any ideas what could be going on?