Mac Mini will not load after recent update.

My late 2012 model Mac Mini just had a software update and upon rebooting, my login name did not populate.  I rebooted again and now I get the gray screen with spinner and progress bar.  Once the progress bar loads I have just the spinner for a minute or so before it cuts off completely.  I use a wireless MAC keyboard and it will not load into safe mode when I try holding down SHIFT upon reboot.  Any suggestions?

Try Safe Mode with a wired KB
Use a PC KB if necessary
http://support.microsoft.com/kb/970299
Boot to recovery
OS X: About OS X Recovery
and try repairing the startup disk
Next reinstall the OS

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