pjwren Posted March 9, 2021 Share Posted March 9, 2021 I'm having an issue with my refurbished Mac, purchased in 2018 - MacBook Pro (15-inch, Mid 2012) 2.3 GHz Intel Core i7 16 GB 1600 MHz DDR3 Intel HD Graphics 4000 1536 MB Mojave 10.14.6 ... Basically, every so often, the left-click on the mouse stops functioning correctly and the right-click menu appears on screen instead. When this happens, everything else seems to freeze, except the ability to move the cursor. e.g. I'll be working in Logic, left-click to perform whatever action is needed and suddenly the right-click menu - corresponding to the area my cursor is covering - appears. If I switch to the trackpad, instead of the mouse, the same thing happens. At the same time, none of the keypad works and I end up having to shut down. Strange thing is, it's so unpredictable. Some days the glitch will appear within five minutes of start-up, other times I can be working for hours on a project before it emerges ... some days it doesn't happen at all! I'm concerned that it may be a hardware problem, as I've run first aid in disk utility, and have anti-virus software - both are all clear. Any help would be much appreciated. Quote Link to comment Share on other sites More sharing options...
facej Posted March 9, 2021 Share Posted March 9, 2021 Make sure that the battery is not bulging and causing pressure on the trackpad from below. Every time I needed to replace a battery in a MacBook Pro it started with weird symptoms of faulty trackpad actions and/or weird USB related errors like from mice. At 8 years old the battery should be ready for a replacement. Quote Link to comment Share on other sites More sharing options...
pjwren Posted March 10, 2021 Author Share Posted March 10, 2021 Thanks for the response facej. I took the back off to have a look - but found I couldn't remove the battery, as I don't currently have the required Y screwdriver! ... will send off for one, and take it from there. Thanks again. Quote Link to comment Share on other sites More sharing options...
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