I have a late 2011 MBP running Boot Camp with Windows 7 and Mac OS X Lion. I was booted into Windows 7 when the screen went black and the computer died. I powered up the MBP again and pressed D to enter Apple Hardware Test. I ran the extended test and it said everything was OK. Then I restarted the computer and saw the white screen, then the screen went black and did nothing. Maybe after 30 seconds, I heard the fan turn on and it got louder. Now the screen is still black, but the fan is running, but nothing is happening. The light on the Caps Lock key doesn't turn on when I press it. How do I diagnose this problem? I heard you cannot run a Live Linux CD or the Ultimate Boot CD since Macs don't have a BIOS. I really hope the hard drive didn't die. Does the fact that I could run Apple Hardware Test mean the hard drive is OK?