IMAC 10.6.8    error message: batteries wireless keyboard, but I have a numeric keyboard

I use a numeric keyboard, originally a wireless, but for a yr now a numeric.  I get an error message: my wireless keyboard needs new batteries or will turn off automatically; I'm at 15% now (left). 
I also get a rolling earth ball when i first power up, eventually getting to desktop.
I'm afraid i may be about to crash and die.  Help!   Thanks, Sheila from Madison

If you are not running any BT devices try turning it off: System Preferences>Bluetooth and uncheck 'on'.
If you are using BT for other devices try deleting the entry for the old BT keyboard.
For the slow boot-up problem have a look at System Preferences>Starup Disk, select 'Macintosh HD, Mac OS X, 10.6.8' and restart. Sometimes the Mac struggles to find a start-up disk and this re-establishes the link.

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