Hello, I have a Macbook Pro Mid 2014 A1502 with a left click issue. I am a computer technician so I am familiar with most repairs and have attempted most things already that other people have on similar forums. So the track pad lets me move the pointer around and I can right click on things, but if I try to left click it wont work. When I try plugging in a external mouse(I tried wireless and Wired) it does the same thing, everything works except left clicking. I do not have any Bluetooth mouses activate and I also have Bluetooth turned off. I Have tried using using mouse keys(which is enabled by clicking the option key 5 times), using this I was able to use my keyboard to click on things in order to access system prefrences. I went to trackpad settings and tried turning on tap to click. This did not fix the problem, however I noticed that very rarely sometimes this does work when I tap, but this only randomly started working twice for a few seconds within the past 4 hours or trouble shooting. I have opened up the Macbook pro and adjusted the trackpad screw as well, that didnt fix it either. I also tried checking the setting to deactivate the trackpad when my wired mouse is plugged in, it did deactivate the trackpad, but it still wont left click. Any idea what else I could try or what the problem is?