820-3462 repaired backlight by replacing Q9706 but will not boot to os,

tried reinstalling os perfect picture until it restarts to finsh loading os then wont boot into os and has distortion on top 1" of screen, looks like someone worked on the board before me as keyboard connector slightly melted and that wasnt me, was like it before i started, anybody got any clues where to start
 
Hi just run apple hardware test and it said no problems found, even done the extended testing. Perfect picture all the way through no distortion at all
 
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Hi Duke it starts up like the fist pic then ends up like the second one and same on external, the band at the top in the first picture does come and go
 

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dukefawks

Administrator
Looking at the video crap during boot it must be something in the CPU as this handles the video creation. I'm not 100% sure, but I have no other ideas with this one.
 
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