MacBook Pro not starting up, has faint lines across apple logo and runs hot

Hello, my MacBook Pro 2011 model is not working. I when trying to start it up it has faint horizontal lines, equally spaced, all across the screen. When the apple logo disappears the machine stops progressing any further, and starts running really hot. Yesterday I had to run the batter flat before I could get it to start properly and it ran all day fine. Today it logged in but then went haywire with split desktop and horizontal lines and crashed. Can't get it to restart.
i haven't a clue what's wrong, and I can't afford to replace it right now. Any ideas anyone?
blessings,
DAvid

david.moody wrote:
I Should also say that today numerous resets have not solved the problem.
Are you referring to SMC and PRAM resets?
http://support.apple.com/kb/HT3964
http://support.apple.com/kb/ht1379
If not, try them:
Run an Apple Hardware Test. That may pick up a clue:
http://support.apple.com/kb/ht1509
Run the extended version. Note that an error free test is not 100% reliable.
Ciao.

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