The other day I was using my iMac, just surfing the web (email, etc), and the screen went black out of nowhere. The only thing I could do was hold the power button to shut it off. Now, I cant get any video back to the screen. I tried leaving it unplugged then rebooting, I reset the PRAM (a few times). I even took out one of the two RAM modules to test each one individually (the original RAM), and the mac booted fine with each one. Everything is working. I connected it to my TV and can do anything, only the mac display is a constant flickering backlit black. You can not see anything at all. My warranty is expired and I'm hoping I can find someone who can help me figure out what the problem is. Here is a video of the issue: http://www.youtube.com/watch?v=Wa6l66XOl8I Please help!