Hi,
Check with Sony Support, their on-line documentation, and drivers.
Sony - Contacts
http://esupport.sony.com/US/perl/contact-land.pl
Sony - Drivers
http://esupport.sony.com/perl/select-system.pl
Sony - Support
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Do these to clear corruption and repair/replace damaged/missing system files.
Run DiskCleanup - Start - All Programs - Accessories - System Tools - Disk Cleanup
Start - type in Search box - COMMAND find at top of list - RIGHT CLICK - RUN AS ADMIN
sfc /scannow
How to Repair Windows 7 System Files with System File Checker
http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html
Then run checkdisk (chkdsk).
How to Run Disk Check in Windows 7
http://www.sevenforums.com/tutorials/433-disk-check.html
Then check to be sure ALL the default Services are set correctly at the Defaults.
Start - type in Search box -> Services find at top of list - Right Click on - RUN AS ADMIN
BlackViper - Services (Set at Defaults) - scroll down to them
http://www.blackviper.com/2009/01/13/black-vipers-windows-7-service-configurations/
Hardware devices not detected or not working - a Mr Fixit
http://support.microsoft.com/gp/hardware\_device\_problems
Troubleshoot problems with Bluetooth enabled devices
Set up a Bluetooth enabled device
http://windows.microsoft.com/en-US/windows-vista/Set-up-a-Bluetooth-enabled-device
Troubleshoot problems with Bluetooth enabled devices
http://207.46.197.98/Windows/en-IN/Help/11a74104-645d-40d4-b933-bde5d15537bb1033.mspx
How to setup a Bluetooth connection
http://www.vista4beginners.com/How-to-setup-a-Bluetooth-connection
The Bluetooth item in Control Panel on a Windows Vista SP2-based computer does not work
as expected when you click the item - for Windows 7 check this manuallyhttp://support.microsoft.com/kb/960531/en-us
If you need drivers try your System Maker's support site and/or the actual device maker's site.
BluetoothView is a small utility that runs in the background, and monitor the activity of Bluetooth
devices around you. For each detected Bluetooth device, it displays the following information:
Device Name, Bluetooth Address, Major Device Type, Minor Device Type, First Detection Time,
Last Detection Time, and more. BluetoothView can also notify you when a new Bluetooth device
is detected, by displaying a balloon in your taskbar or by playing a small beep sound. - FREE
http://www.nirsoft.net/utils/bluetooth\_viewer.html
BluetoothCL is a small console application that dumps all current detected bluetooth devices into
the standard output. For each Bluetooth device, the following information is displayed: MAC
Address, Name, Major Device Type, Minor Device Type, and optionally the company name of
the device (if external file of MAC addresses - oui.txt is provided) - FREE
http://www.nirsoft.net/utils/bluetoothcl.html
Add a Bluetooth enabled device to your computer
http://windows.microsoft.com/en-US/windows7/Add-a-Bluetooth-enabled-device-to-your-computer
Add a Bluetooth or other wireless or network device: frequently asked questions
More info of possible interest to some :
What is a Bluetooth personal area network (PAN)?
http://windows.microsoft.com/en-US/windows-vista/What-is-a-Bluetooth-personal-area-network-PAN
Connect to a Bluetooth personal area network (PAN)
http://windows.microsoft.com/en-US/windows-vista/Connect-to-a-Bluetooth-personal-area-network-PAN
Hope this helps.