That doesn’t make a ton of sense for the internet thing but shelving that for now it sounds like you somehow let out the magic smoke.
Several questions, are you combat deployed or at one of our many bases in Asia or Europe where you could drop by an electronics shop?
I’m guessing it’s a no but is your laptop covered by a dell warranty, if so which kind?
Where these the factory power bricks or 3rd party?
My money is on the permissions set in AD for your users and groups are blocking some people and not others based on their membership