I've experienced unexplained connection drops when using an Apple wireless keyboard and/or mouse with my Mac. I looked into this and found others experiencing similar challenges, so I've gathered a few suggestions that may help.
Symptoms vary, but they seem to include:
Not every user is affected. It is not possible to estimate how many people are impacted. Further assistance is available here.
What to do
There are numerous quick steps you can attempt to address this problem.
These steps may not work. Apple hosts additional Bluetooth troubleshooting information here.
To use your Mac you can also try:
If your mouse is working and your keyboard isn't, or if you have a wired mouse you can connect for the task it's possible to manually reconnect your device(s) by accessing System Preferences>Bluetooth. When Bluetooth Settings appear some users report their devices begin working again, otherwise you can re-enable the connection in the pane.
If your keyboard is working and your mouse isn't, type Command + Space to invoke Spotlight. Type "Bluetooth" and use the down (cursor) arrow to select System Preferences>Bluetooth, then tap Enter. This sometimes activates the connection.
Some reports claim the Bluetooth problem can be overcome by resetting PRAM and NVRAM, though this doesn't apparently work for everyone.
Repair the pair
You can see which devices your system is paired with in System Profiler (Tip: Hold down the Option key when you select the Apple Menu and you will be able to select System Information directly rather than needing to enter About This Mac in order to access System Information). Select 'System Report' on the next screen. Is your device listed among those included in the Bluetooth section?
You can create a fresh pairing for your device.
I hope one or more of these steps helps Mavericks users who may be suffering connection problems using a wireless keyboard or mouse with their Mac.
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