I cannot use my cellular data on hp elite dragonfly which was working just fine a day ago. I have checked with the sim operators too and they said that my sim is working just fine. Also, i removed the sim and used it on the mobile phone and it's working too. Only when i put it inside the laptop, i am unable to use it. My drivers are installed I turned my dragonfly off and then removed the sim and inserted again. but nothing seems to work.