Question about Apple 21.5" iMac Desktop
I have imac 21.5", usb and bluetooth not working, so i can't to pram reset. I did the sim reset, but still doesn't work. Keyboard and mouse not working.
Simply you can't alone, probably you have problems with your southbridge on motherboard. Usualy this can be solved with rebaling. Is a common problem because - probably - you not clean your mac regulary.
Posted on Nov 30, 2013
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Posted on Jan 02, 2017
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.
Posted on Apr 02, 2009
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.
Posted on Apr 07, 2009
SOURCE: mouse and keyboard will not work
Does your imac have the proper bluetooth? If this is a new issue with existing equipment open the bluetooth menu and find devices. You may need a wired mouse to get the proper fix set.
Posted on May 02, 2010
Do you know for a fact that Bluetooth is at all involved? Try attaching a wired mouse -- if the wired mouse also freezes, the problem does not involve Bluetooth.
Flash is notorious for causing system problems on Macintoshes. Try reinstalling the most recent version of Flash.
Posted on Jun 18, 2010
Testimonial: "Bluetooth KB dies same time as mouse. USB mouse continues to work. I did get latest Flash. I guess you're right,Flash and Macs don't mix well! Thank you for response."
Verify that the OS is working properly by plugging in a different USB keyboard. It doesn't have to be Apple brand; the Windoze key sends the same code as the Apple/Command key.
The most likely cause of a keyboard failure besides contamination or key breakage is a bad cable. It is possible that the encoder board inside the keyboard has failed; this is probably not practical to fix except by cannibalizing another keyboard of the same model.
Posted on Nov 10, 2011
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