So I built this PC about three years ago and the operating system I installed was x64 W7 SP1. I find B A kind of interesting with all the amazing information it provides, however, I hadn't used it for many months prior to upgrading to W10. I finally got around to using it and it lists my operating system as Windows 8 Home Premium (x64) (build 9200)! Go figure! Perhaps there is an updated version for * that must be manually installed. If there is I'll edit this post. edit: I meant to say updated version of Belarc but there wasn't!