I have a pre unibody Macbook pro core 2 duo. As of right now, my screen will not turn on. There is a chime at startup, I can even login blind open up iTunes and play songs. (through keyboard shortcuts I am familiar with) I have connected an external monitor though the DVI pot and it does not seem to detect it. I have also tried starting up in "clamshell" mode, and it has not worked. Something else I noticed is when I close my macbook it does not fall asleep as usual, it just continues to run. I've messed around with the reed switch, which hasn't helped either. I have reset PRAM and PMU. I should mention that i have once been able to get the external monitor to work. I do not know how it happened, but 1 out of 1000 startups it has worked as a secondary display. I restarted and it was no longer working> I am looking for suggestions on how to either get my Macbook screen working or get my external monitor to be detected. Thank you so much, New user. My hopes are up.