Try disconnecting everything (keyboards, printers, gaming controllers, and so on) from all your machine's ports and see if it makes a difference. It's also possible that your Mac thinks another peripheral accessory is a mouse. Does your trackpad now work? If so, your system has been set up to ignore trackpad input when it detects a mouse.Īs long as you're running OS X 10.7 Mountain Lion or later, you can change this setting by going to System Preferences > Accessibility > Pointer Control and unticking the checkbox next to Ignore built-in trackpad when mouse or wireless trackpad is present. The way to test this is to check for a physical mouse connected to your system, either via USB or Bluetooth. If your trackpad is entirely dead, don't despair-it could also be a simple settings issue. As before, a setting somewhere around the middle should be suitable for most users. You'll see a slider at the bottom of the window titled Tracking speed. Once again, head to System Preferences > Trackpad.

If you find the mouse's pointer is overly responsive, you could try adjusting the tracking speed.

Issues with apple macbook pro a1286