Trouble with Bluetooth ...

Hi , 

I'm using Dell Inspiron 15 R . My Bluetooth has been acting weird for the past few months . I have a Dell Wireless 365 Bluetooth Module .

My problem is Bluetooth devices disappears all of a sudden . I cannot see the blue tooth section in my device manager , Bluetooth devices in devices and printers and also the Bluetooth icon in the start bar . I tried downloading the latest driver from dell and re installed it at least 5 times . Every time installer detects my device and successfully completes the installation . Everything works fine . I can connect my Bluetooth headset , phone everything . After 1 or 2 restarts .. again Gone !! No trace of Bluetooth . 

I use R226746 driver from Dell . 

Any solutions / suggestions ?? 

Thanks :) :)