Windows 10 Product Key Activation Issue

[Heydon2015]

Well I have to admit that I did use train simulator tonight and used it for a good hour approx and didn't get a blue screen the last time I got a blue screen was when I was closing down fix steam edition , and it seems to me that steam games are prone to bugs and glitches , . Also when I play something like assassins creed unity , I do not get a blue screen either , just puzzled it was while I was closing flight simulator X that I got blue screen