MBP not recognizing USB Microphone

Hello
Need some help as I have an Audio Technica ATR2500-USB microphone that works with a PC but does not as of recently with my MBP late 2011 OS 10.9.3
I have used in the past with no problem at all in Garageband. Now I cant find it in either GB or System Preferences.
HELP !!!
PinWF

Phfromwakeforest,
Try a SMC reset:
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
Try a PRAM RESET:
Shut down your Mac.
Locate the following keys on the keyboard: Option, Command (⌘), P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on your Mac.
Immediately press and hold the Option-Command-P-R keys. You must press this key combination before the gray screen appears. Continue holding the keys down until your Mac restarts, and you hear the startup sound for the second time.
Release the keys.
Try a perissions repair: Applications>Utilities>Disk Utility (Or Go>Utilities in the menu bar, or SHIFT + COMMAND + U from the Finder desktop) select(highlight) your volume (default name Macintosh HD)in the left sidebar, click repair permissions.
Try these one at a time, they can cause no harm

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Hey 655micha,
I'm sorry you're having an issue with a USB device. Do you get an error window that pops up? If so what does it say? Have you checked Device Manager? Is is just one device that isn't working? Has it ever worked before? Is it just one USB port in particular that isn't recognizing devices?
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