Bluetooth not found anymore

Usually if i go to PC and drivers, i will have an option to use bluetooth, however, just today it has disappeared and i need to use the bluetooth feature for my laptop (dell inspiron 15)

http://puu.sh/bUKlg/bfb6377ba3.png as you can see, there's no bluetooth option there anymore, when there used to be.

does anyone know a fix for this?