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Helpful answers
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Oct 6, 2013 3:44 PM in response to mary lou galindoby sanjampet,Mac Pro or MacBook Pro,What OSX, if you have a track pad (MBP) check system preferences track pad zoom&scroll, or zoom options functions (slightly different depending which OSX) if a mouse holding control while using wheel will affect the screen, as well as swiping on a track pad.
Also see the following:
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Oct 6, 2013 3:52 PM in response to mary lou galindoby dominic23,★HelpfulAny BluTooth device nearby with failing battery?
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Oct 6, 2013 10:51 PM in response to mary lou galindoby DanMeck,★HelpfulI had the same issue this weekend, so I contacted the Apple Support through Chat. I performed some troubleshooting procedures the guy requested me to do but the problem continued. It was really frustrating. He recommended me to take it to a Genius Bar. I decided to disable temporarily the trackpad and connect an external mouse to be able to work. In any case I continued googling for more info about the issue and found that pressing the four corners of the trackpad worked in some cases so I did it and enabled the trackpad back. It totally solved it. At least it seems so. It worths a try.