Items marked by the "How to upgrade from Windows 8.1/7 to Windows 10" tag:

I just listened to a NPR podcast about founder of JetBlue - his motto is that when something goes wrong, it's an opportunity for a business to create a loyal customer by making it right. That is what Digital Product Key did for me today. Between a software incompatibility issue to an email issue, customer service person, Victoria Hudson, stayed with me. She made sure that each issue was corrected and I received what I was promised. I truly appreciated her help.

I was a little apprehensive initially since the price of my Windows 10 purchase was significantly below the competition. The process was flawless! Their service excellence skills are exceptional, the download and installation was extremely simple - and I'm not tech savvy. I'm a customer for life!

MY CPU was blown up by a virus. I needed to reinstall Win 7 SP1 asap. Windows and Dell suggested kite flying. The virus erased the original product key. I downloaded the software in the middle of the night. Using my Win 10 machine the software downloaded seamlessly and the key worked like a charm. I was also able to burn copies of the software. I HIGHLY recommend these folks. I am back up and running. Very happy with their service.