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Steam has now officially stopped supporting Windows 7, Windows 8, and Windows 8.1.
(www.theverge.com)
This is a most excellent place for technology news and articles.
8 and 8.1 is a shame. Best versions if Windows we've ever had.
I was helping my grandma with her old laptop that had Windows 8 and let me tell you, I only wanted to punch the screen 4 times!