Red line on my desktop

Dear all, could you please help me to solve my problem? Today my iPad asked me to updated the software. Well, before I did that, something very strange happened: suddenly 2 lines appeared on my desktop. I turned it off, tried to find solution at some forums but I was not succeed. I really hope someone help me. Thank you in advance. Regards, Marcos (São Paulo, Brazil)

That suggests that it may be a GPU, display or display connection problem.  An appointment at an Apple store genius bar for a FREE evaluation is the best option.  They will be able to give you a definitive answer.  There is no software solution.
Ciao.

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