I was using my iMac Al 20', everything was working fine, and after I
did what I had to do, I shut it off, to go to bed, then I remember that
I had to pay a bill, and turn it back on, but when it start up I
noticed that my mouse wasn't working, I've tried my keyboard and
noticed it didn't work also ( don't know about the remote, forgot to
try it ).
I pick up my mouse and noticed that it was 'turned off' ( no light
below it ), so I've unplugged and plugged it back again, the mouse
turned on, but it still didn't move ( the cursor were at the apple on
the top ).
I've tried to change the mouse from the keyboard usb to the computer
usb, same result, tried to change the keyboard usb, unplugged an old iPod
that I use as a backup drive ( through firewire connection ) unplug the
cable that I use to sync my iPhone, nothing worked.
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Re: Keyboard and Mouse don't work anymore
Hi, Sorry you are having problems,
Well Marcelo, the first thing to do in a situation like this is to restart your Mac or even better, shut down and restart. So, if you have done this, and still the keyboard and mouse don't respond, and, as you have mentioned, you have tried the other USB ports on the back of the Mac, it sounds like somehow, unexpectedly, your iMac motherboard got a shock of some kind and it killed the USB controller....
Last thing to try is to unplug the iMac completely of everything and let it sit for 10 minutes and then plug just the keyboard and mouse back in and try to see if that does the trick..
Otherwise, Apple will cover this if it is still under warranty.
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I think what has been done is your grandchild has accidently magnified your screen slightly. To correct
this hold down your ctrl key on your keyboard and move your finger on the mouse scroll button back. Hope this helps.
Thank you for contacting Fixya Support, I am glad to assist.
There are a few steps you can try to troubleshoot this issue:
Try a PMU Reset: * Turn of your iMac if it is already turned off * Disconnect all connections to the iMac except the power cord * Now disconnect the power cord for approximately 20 seconds * Reconnect just the power cable the keyboard, mouse and power cord, and then power your iMac G5 up.
* Check to see if the iMac boots up normally without power interruption.
* If the iMac G5 shuts off again, try these steps, another recommendation would be to remove all connections including the power cord, and lay the iMac G5 on soft cloth face down and with a philips screwdriver, remove the plate on the bottom of the iMac G5 where your RAM memory is located. Before removing the RAM however, touch your hand on the metal boot to discharge any static current you carry for approximately 5 seconds.
Now remove each RAM card and then reseat (re-install) each card.
Restore the RAM card cover with your Philips screwdriver, reconnect your power cable, keyboard and mouse and turn on your iMac G5.
See if this second procedure helps if the first procedure does not work.
Please reboot the computer in "safe mode" holding the shift key at startup. This will deactivate temporarily your extensions. If the keyboard works in safe mode, then go to the apple menu, system preferences, and accounts. Add a new account, reboot and log into your new account. If it still works, then that means that you have a corrupted preference
Try hitting your capslock key (which will light up) or command-tab (which will switch between applications) to see if the keyboard and computer are still responding when this happens. If so, it sounds like the mouse or the USB port it is connected to may unfortunately be failing.
Also, try connecting the mouse to another USB port as others have suggested, either on the keyboard or computer itself, as this will help you determine if the failure is in the mouse or port.
Did you seperately setup the mouse? Even if you have, go into the Bluetooth preferences under System Preferences. Select the mouse & delete it. Setup a "New Bluetooth Device" and select "Mouse." Be sure to press the Reset button for 2-3 seconds to get the mouse into "Discoverable" mode. Your Mac will then setup the mouse automatically.
If this does not work, the Bluetooth chip in the mouse may be defective.