Hi @JGreenfield61,
Welcome to the HP Support Forums! It is a great place to find the help you need, from other users, HP experts and other support personnel. I understand that somehow Windows 10 installed itself on your system. I am happy to assist.
Normally it requires some form of intervention to install unlike the the Windows 8 to 8.1 update of around a year ago, where a previous Windows system update enabled the upgrade from 8.0 to 8.1 as part of the preparation for the Windows 10 release. But even so,as long as it is within 30 days of the upgrade to Windows 10, you should be able to rollback if that is what you wish. Going back to Windows 7 or Windows 8.1 - windows.microsoft.com
Other than that, if you wish to complain about the Windows 10 upgrade process, or the particular conditions of what happened in your case, that would best be addressed to Microsoft. Contact us - support.microsoft.com
Please let me know how that works for you, and if it does resolve your issue, please mark this post as a solution. Kudos would also be appreciated.
Malygris1 I work on behalf of HPPlease click Accept as Solution if you feel my post solved your issue, it will help others find the solution.Click Kudos Thumbs Up on the right to say “Thanks” for helping!