Try
Speccy from Piriform. It may be that the downloader sensed your operating system on your Internet computer and you got a version for W8.1. May or may not be the case with Speccy, which has a free version.
Belarc Advisor is also good, but I don't think it provides just a computer overview.
BTW, how did you get interested in the CFL? Or is that just to tide you over until College and NFL football season?