Hi I'm sorry you are having this issue.
There is a specific driver that is already in your laptop, but inactive as of now so the pic blanks after a few secs.
This is a problem specific your laptop you will need to contact Dell for this by visiting this web page.
They can give you a phone # ***** a request for them to call you to solve this one;-)
In any case, I will stick with you until this is complete.
Please rate kindly thus far, it won't cost you anything to rate my service to you kindly,
you won't lose me by rating;-)
It actually will keep us locked in until this is working as it should.
Then you can reach me by simply replying to this message anytime;-)
Thank you and have a wonderful day!