imac on startup

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screen was covered in Vertical Green lines that are full of pixels, moving almost like static.
 
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It sounds quite pretty, and maybe just some Christmas lighting decoration or even a simulated Northern Light display, whatever iMac model it might be. And that info could help. ;)

But more likely a goofy graphics card. :(
 

Raz0rEdge

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Do yourself a favor and stop with the one line cryptic messages. Provide specifics, history and so on.

How long has this been happening? What have you tried to address it? Do you have AppleCare?
 

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