Ok so what im getting from this is you received them both and had them personally unfortunately there is nothing that I know of that we can do and dell won't be able to either since well you don't have to register computers to use them that is untracked information the only thing would be to file a police report saying someone stole the laptop from you although if they did register it there might be a chance to track it if they didn't just decide to sell it unopened

If it's a common problem with that model, try reaching out to the manufacturer? But you've already answered your own question, it's up to the store if it's a refund or replacement. So you have to call and talk to stores, not ask reddit. It doesn't matter what we tell you.

I see it all the time. The problem usually is going to have something to do with the health of their battery. Similarly, if the graphics controller on their motherboard is taking a shit, it'll present similar issues.

Could also be a bad connection between the motherboard and the display ribbon.