This is supper. I did not know that Bluetooth can be enabled or disabled from Bios setup utility. I found the check box for Bluetooth unchecked. I ticked it and immediately the computer restarted, dell support assistant suggested driver update which I did and my Bluetooth worked immediately. Prior to this I had tried windows as well as dell troubleshooter which both showed I was running the lates drivers. Windows showed that Bluetooth is not available on this device while dell said the machine is out of warranty hence they cannot assist. Thanks man.
dell precision m4600 enable 11
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