Hi Mohamed,
Thank you for posting your issue on Microsoft Community Forums.
- Did you make any changes to the computer prior to the issue?
- Are you able to connect other Bluetooth devices?
- Did you try connecting the device on another computer and check if it works?
Error Code 28 corresponds to the drivers for the device is not installed.
Creative Bluetooth speakers do not need any driver to operate. You may need to update the Bluetooth driver of your computer's built-in Bluetooth adapter.
Refer:
Update a driver for hardware that isn't working properly
http://windows.microsoft.com/en-us/windows7/update-a-driver-for-hardware-that-isnt-working-properly
Also refer to the links for assistance:
http://support.creative.com/kb/ShowArticle.aspx?sid=64354
http://support.creative.com/kb/ShowArticle.aspx?sid=87783
Hope this helps.