I have a blue line on the left side, going up and down my screen.

I have an iMac 21.5 inch late 2009 model and running El Capitan V. 10.11.6. My problem is that I now have a blue line that extends from the top of my screen, starting to the right of 'File' and runs all the way down. The only thing I did recently was last updated iTunes on 18 July and I updated on July 20 of the OS that was yesterday.

The single trouble shoot I did is off my computer for a few hours. However, the line is always there. Someone at - it this experience? I have attached the Image after reboot of my iMac.

Have you tried a system management controller - reset?

Reset the management system (SCM) controller on your Mac - Apple Support

This reset also covers certain aspects of the resolution of the screen:

How to reset the NVRAM on your Mac - Apple Support

Not sure if the symptom is indicative of the material cause; using above

Links may be able to solve the problems, and then decide if a visit to the CENTER or

Apple Store (engineering) for inspection would be wise.

I hope that a reset or other aid.

Good luck & happy computing!

Tags: Mac OS & System Software

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