You may have upgraded to Windows 10 as soon as humanly possible, but don't tell that to your PC manufacturer. As part of its tech support research,Laptop has learned that at least Dell and HP are discouraging customers from updating to Windows 10, or even recommending that people roll back to older versions. When asked, both companies defend the practice. They're committed to Windows 10, but their ultimate goal on a support line is to fix your PC... even if that means reverting to old software.