I have a Black MacBook that's about a bit more than a year old. It has worked flawlessly to this point, but when I turned it on today, the display was VERY dim, like it was in sleep mode. Problem is, it will not come out of this mode, no matter what I do. I've re-sent the PRAM, hard-restarted it, played with the dimmer switches...nothing. I can connect to an external monitor it it works just fine, and I can JUST make out what is on the actual laptop screen, but no brightness whatsoever. About ready to take it in to the shop, but thought I would check and see if anyone has any thoughts on what else I might try before I do...