Hello. I have a laundry list of problems with my 17" MacBook Pro, purchased back when the penryn first came out. The computer won't boot. I don't hear a startup chime, and I hear the fans starting and the disc drive starting, but the display doesn't start. The sleep light turns on, though. When I try turning it off and starting in safe mode, resetting the PRAM, starting in hardware test mode, or even starting from the DVD (both option and C methods), it does the same thing. I think the keyboard doesn't work. I've tried resetting the PMU and the PRAM (I don't think it accepted the PRAM reset). Does anyone know of any fixes, or possible causes? I read about the 1.5 efi firmware update causing this, and I think I *might* have applied this. I can't remember, though!