You have Windows 8.1? We have that on our HP desktop that we bought about 3 years ago. I absolutely hate it- slow, buggy, hangs up, etc.
I had Win 7 on my 4 year old laptop, which I was very happy with. But one night it did an auto update before I could stop it to Win 10. While not as bad as 8.1, it still has issues.
Why can't MS leave things be for a couple years b4 moving on to the next "greatest" thing??