Very weird installation on new laptop

Hi all in company I work in we got a laptop in all I remember at mo is its a dell but it was brand new still in wrapper people sell items to us when they short of money ..anyway I took it out to test it but when I switch it on on 1st screen that comes up its got bp icons like the petrol station bp logos .. then it asks do u want to install enterprise .. or professional once I click enterprise it starts going into different things asking for like bn number or something like server addresses etc..maybe not much help but thought someone might have clue what im on about ..any help appreciated thanks

Have a look on the bottom of the laptop and inside the battery cover. See if you can find a Windows sticker with a serial key.

Yes, and 'professional' would be the only sensible choice.....

Theres a windows key etc its a brand new laptop but hwen u turn it on the setup process is something ive never seen b4 its weird

Well, choose Professional instead of Enterprise.