Microsoft is putting all of its weight behind the big Windows 10 push, but it looks like some OEMs are pushing back. While going undercover and calling the customer support lines for Dell and HP, the people at Laptop found that many of the representatives from these companies were advising against upgrading to Windows 10, or even recommending that they do a rollback to an older operating system. Before you assume that this is Dell and HP’s way of getting back at Microsoft for releasing its own laptop, it’s much more likely that the respresentatives just don’t want to have to endure the headache of dealing with a new operating system.