When I turned on my MacBook Pro today, I noticed that the trackpad suddenly stopped left-clicking normally and instead only performs right clicks. I’ve already restarted it twice, but the issue remains. I tried disabling the secondary click and enabling tap-to-click, but it didn’t help. I also disabled the ctrl-click shortcut, but there was no change. Even when I connect an external mouse instead of using the trackpad, the right-click menu still keeps popping up.
Does anyone have any idea what could be causing this?
For reference, I’m running OSX Leopard on a 2009 MacBook Pro.
Apple menu > System Settings > Trackpad: Ensure that Secondary Click is either disabled or configured correctly. Tap to Click is enabled, especially if you prefer tapping instead of physically clicking.
Why not check for hardware damage or swelling battery? Older MacBook Pro models (like the 2009 version) are prone to trackpad issues caused by a swelling battery, which can physically interfere with the trackpad or your right-click keeping popping up.
Inspect the battery compartment for any signs of swelling. If the battery is swollen, it needs to be replaced, as this can cause both trackpad and mouse malfunctions.