Can anyone explain this??? Weird stripes upon return to Mac OS X Lion

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i using imac , went away our , upon return on screen:

[​img]

out issue is? first time have ever seen on computer have used. being normal windows pcs , imac being first ever mac.
 

if near apple store suggest take them. there might problem gpu in unit (no can't replace it). if not near apple store give them call.

hugh
 


Forums Macs macOS Older OS X Versions Mac OS X Lion (10.7)


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