I just bought a new USB Mouse for my MacBook Pro, and it suddenly won't work. It will work fine on my brother's Mac, but will not work on mine. I have tried two other mice and neither will work. Checking in System Preferences>Mouse it says that it cannot detect a mouse. Help!
MacBook Pro, OS X Mountain Lion (10.8.4), Logitech mouse
Is your mouse listed in the USB Device Tree?
To see it go to: Apple Menu / About This Mac / More Info ... / System Report.
In the left hand column, under Hardware, select USB.
If the Device Tree does not list the mouse, try plugging in a different USB device - does not matter what - and see if that is listed.
Is your mouse listed in the USB Device Tree?
To see it go to: Apple Menu / About This Mac / More Info ... / System Report.
In the left hand column, under Hardware, select USB.
If the Device Tree does not list the mouse, try plugging in a different USB device - does not matter what - and see if that is listed.
It wasn't listed, so I plugged in a USB memory stick, and that didn't come up either. I also tried a keyboard - no success. Does this mean the USB ports no longer work?
Does this mean the USB ports no longer work?
That could be it. You could run a hardware test to verify.
On a pre- 2013 computer, this one:
http://support.apple.com/kb/ht1509
Or, on a newer Mac, this one:
I ran the test, and it has seem to have solved itself! No idea what happened, but it's working fine now. Thanks for all your help!
USB Mice won't work, but will on another Mac. How do I fix it?
