HP DV9000 with a blank screen

A few months old HP DV9000 laptop. Display just went blank while operating the laptop. Now when I try to start it, their is no display but it boots normally otherwise. There are no beeps or sounds but just no display. I have tried removing the battery but that doesn’t help.

My guess is that there is some issue with Nvidia display drivers. Should I try an external display and try to update the driver or if there is any other solution?