White screen Grey Lines

Well its my first time doing this so forgive me if I make little sense. I have a compaq presario V6500 and its currently coming upto 4 years old in january. Ever so often my screen goes completely white with vertical grey lines, all the power lights go off and there is absolutely nothing I can do to reset it, once this happens when I try to reboot the laptop it just dies out. It attempts to turn on, the power light comes on, I think i can hear the fan but then it gives up again. I have replaced the charger, also the battery. There is definatly no water damage. Other than this, Ive never had any issues with my laptop. If anyone has any idea's or inklin as to what it could be I would be very grateful. I am reluctant to take it into someone because I think I might get ripped off, also with it being four years old I am also reluctant to do any major hardware replacing, might as well just buy a new one if thats the case. Thank you

Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Unsync or delete the problem songs and resync/redownloa them
Downloading past purchases from the App Store, iBookstore, and iTunes Store

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Welcome to the Apple discussions.
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I was updating my library and after I disconnected it all I get now is the white screen with black lines. If i keep pressing buttons I can get it to kind of play, but it sounds like something internally is not right.
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White screen Grey Lines

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