Call Siri for help in locating the mouse on-screen or increasing the cursor size to help you find it. Your PC's mouse or trackpad … Wait at least for 20 seconds and then do a three-finger swipe to the left to get back to finder screen. Hi I'm using an Acer Aspire 5942, which I got about 5 days ago, It was all going fine until yesterday, when I was using the mouse it randomly stopped working, so I restarted my laptop and it worked fine, today the same thing has happened twice.