Sorry if this problem has already been addressed in these forums, but I couldn't find it.  
 
I have a:
 
EVGA GTX 590
ASUS P8Z68-V mobo (has Bluetooth
Windows 7 64-bit
Motorola Xoom 
 
I have been able to pair my Xoom to my PC via Bluetooth.  I am using Precision X 3.03 on my PC and installed the Precision X for Android app on my Xoom.  When I load the app, it connects to my PC fine, but the app is blank where the GPU specs should be.  When I press the big "E" button on the app, it says "No GPU can control".  When I click on the "Apply" or the "Default" button in the app, it says "Failed to connect to EVGA Precision."
 
Precision is installed and running on my PC and "Enable external access to PC via Bluetooth" is enabled.  I checked the device manager to see if any conflicts or errors appear regarding my Bluetooth connectivity but everything appears to working fine.
 
The app says the it is connected to my PC in the upper right corner of the app.  
 
Any suggestions?
 

When you start Precision does it ask to pair to your PC?
 
You can also try not pairing it first.

Yes, when I start Precision, it says "select a device to connect," and then I choose my PC.  It then says "Connected to (my PC)" and in the top right of the app, it says "connected: (my PC)".  I still get "No GPU can control" when I click on the big E button and "Failed to connect to EVGA Precision" when I click the Apply or Default buttons.  When I click the Refresh button, it says "You are not connected to a device."
 
Thanks for the reply!