HI! I've got a problem but I think it's fixed now but I wanna know what happened. It started with my wacom tablet. I plugged it in but it won't work so I tried opening system preferences but it won't open and then I went to Finder and accidentally clicked on airdrop then the beach ball appeared. I got impatient so I closed the lid then the light didn't start to blink (blinking is sleeping right?). I opened the lid then there was only a black screen. I tried to force shut down it using the power button but it won't work. Sooo I continued pressing it then finally, it booted up then everything's working fine. i think. I just wanna know what happened? I was so freaked out. sorry for my not so techy language. THANK YOU!