My iMac's cursor is stuck in the upper left hand corner of the login screen and I can't move it and now I can't use my iMac. What can I do? My iMac is a 27 inch 2014 release (the thin one without retina display) and uses wireless mouse and keyboard.

If you have already checked that it is not a battery issue. Try to boot up the system in Recovery Mode

To start your computer from Recovery, restart your Mac and hold down the Command and R keys at startup.

If you can move your mouse and type on your keyboard then it is not the keyboard or mouse.

Alternative to Recovery Mode, You can boot up in SAFE MODE just hold down the option key when you power up the unit.

If you can operate your keyboard and mouse in safe mode then more than likely there is something in your user account that is causing the issue.🙂

If your Apple wireless mouse, keyboard, or trackpad aren't working as expected - Apple Support

JAKSM wrote:

My iMac's cursor is stuck in the upper left hand corner of the login screen and I can't move it and now I can't use my iMac. What can I do? My iMac is a 27 inch 2014 release (the thin one without retina display) and uses wireless mouse and keyboard.It runs OSX Mountain Lion (not sure which version) and is a 27 inch model.

Just curious, a 2014 iMac shouldn't be able to install or run OSX 10.8 at all. How did you manage that?

Could this be a software issue? My Mac was still using leopard when it conked out. A tech reset something inside and it revived this year. After the OSX update, I was still able to use my MacBook but now the keyboard and built in mouse pad not working. Also noticed that my MacBook is not shutting down when I close it and instead restarts back up again. Long pressing the pwr button solved this and a usb mouse helps to navigate in iTunes.

Something else you might try, if you haven't already, and that would be to plug a USB mouse into a USB port and see if you can move the cursor then.

have you attempted to change the batteries of the mouse ?

To start in safe mode you hold the SHIFT key not the Option key.

FWIW, there are third-party replacement mice for approx $9 and up along with refurbished Apple Magic Mice for approx $35 and up.

This worked for the mouse part but the keyboard is also not working. Will try external keyboard but my mac 2010 will have no more usb if this happens.