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Q: cursor jumps on screen randomaly
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Sep 23, 2016 5:57 PMby AppleJen77,Hello there, mbaroz!
Thanks for reaching out to the Apple Support Communities! It sounds like you are having issues with your cursor. I know how important it is to be sure the computewr is working properly at all times. Sounds like you have tried some great steps so far according to this article here that talks about If your pointer is jumpy when you use a trackpad, Magic Trackpad, or Magic Mouse
What you might want to try next are some specific restarts. Check out this article to Try safe mode if your Mac doesn’t finish starting up. While this article speaks about the computer not starting up properly, it can also run repairs and stop startup items that can cause issues.
Next, check out this article with steps how to Reset the System Management Controller (SMC) on your Mac.
Another option you can try is in this article: How to test an issue in another user account on your Mac. This will allow you to check to see if the issue is user specific or system wide.
Have a great day!
