Anybody still selling Win7 boxes must be a refurb or NOS (New but Old Stock) and the documentation may had been pushed to the End-of-Life section (hidden) of the website, be patient and wait for reply, hopefully before you money-back period.
The important thing is, that you have all the drivers (came with CD?), the instruction to Restore to Factory if you have to (and you will at some point, if not soon), because how to operate Win7... that info is everywhere.
Is this laptop a "Thanksgiving Special" by any chance? I notice TV vendors sell these special, one-of-a-kind TV that nobody have ever heard of, no documentation, no review, and you take your chances because is discounted.