My 17" 1229, had the same thing; I opened it up from sleep and black screen. I could shut it down by pressing power once then the enter key.
External digital monitor out of the DVI port didn't work either. I did the remove battery Op&Cmd + p&r reboot; without luck too.
Called Apple, they sent me a box to put it in and I had it back in a few days fixed with a new logic board; FREE as in No Charge for anything. (2yrs old; no Apple Care plan)
It was the chipset on the Nvida graphics card; which was recalled.