Macbook Pro Nvidia card sunddenly working

Last year I opened my Macbook pro and the screen wouldn't turn on. Completely black. The computer turned on, I can hear the start up noise and the fans running with keyboard lighting up, just not the screen. So I took it into AppleCare and they came back with the diagnosis that the NVIDIA graphics chip had gone bad, so had the logic board but that had been a problem from much earlier. Apple then graciously told me it would not be covered under my warranty and sent me an estimate for repair which I declined as I could get a new computer for that price. The computer then sat in my closet and has been taken out a few times getting data off of the hard drive then put back in. Today I turned it on and the screen suddenly started working. I then turned it off shut it and repeated only to have the screen go blank again. Again shut down, close and repeat. This time the screen turned on and since I have restarted twice and shut and close the laptop several times but not a complete shut down. My main question is, does this computer sound salvageable, or will it be destined to repeat this? What is the actual issue, is my nvidia card really broken or does the screen just have a few wires loose? Thank you for any information that you can give me.

Let me save you...
http://support.apple.com/kb/ts2377
Message was edited by: palestofwhite

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