When I opened my MacBook Pro SR this morning the screen stayed black. First I thought I left the brightness off since I use it together with my Cinema Display but I couldn't put it up. The computer seemed to work since I heard I got new mail so I hooked it up to the external display, didn't work either. Even a restart didn't work. After a bit of a hassle I managed to turn on screen sharing on my laptop so I could access it through my roommates MBP. This is what I found: Seems that my MBP changed his graphics card overnight I'll go to the Apple Store tomorrow to see what is going on. Can it be that this has got something to do with the 8600m GT problem discussed here?