As some may know I have had numerous problems with my PB since purchasing it 8 months ago. Long story short I'm on my 3rd motherboard (2 within 4 months of purchase) This morning I set it to turn itself on at 9am (have done this before) I open the lid at 10 and seems normal, the sleep light turns off, but yet the screen is black and I can't do anything to wake it up, even pressing the power button. So I had to hold the power button and then do a cold restart of my machine. Tonight, I get a message that freezes my PB and says I need to restart by holding down the power button. What would you guys suggest doing?