TS3048 Bluetooth and USB ports aren't working can't connect mouse or keyboard.

Bluetooth and USB ports aren't working, so am unable to use Imac past turning it on. There's no way to connect mouse or keyboard, it started right after a software update for Maverick (OS X bash Update 1.0 – OS X Mavericks), bluetooth symbol not showing in the task bar at all.    

Hi SBrwn,
Thanks for visiting Apple Support Communities.
The symptom you're describing can be frustrating to troubleshoot as our options are limited. I do suggest resetting the System Management Controller (SMC) if you have not already. This step can help you regain use of USB and Bluetooth.
Follow these steps to reset the SMC on your iMac:
Resetting the SMC for Mac Pro, Intel-based iMac, Intel-based Mac mini, or Intel-based Xserve
Shut down the computer. [by holding down the power button]
Unplug the computer's power cord.
Wait fifteen seconds.
Attach the computer's power cord.
Wait five seconds, then press the power button to turn on the computer.
You can find these steps and more information at this link:
Intel-based Macs: Resetting the System Management Controller (SMC)
All the best,
Jeremy

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