Even if you're tired of Windows 10, don't downgrade to Windows 8.1
how to geek, after trying to reinstall windows 8.1 and experiencing it for a few hours, advised users that it should not be back to windows 8.1. try to find out why so.Microsoft has declared Windows 8.1, but is still waiting without upgrading to Windows 10
it seems that windows 8.1 was not as successful as microsoft expected when it only accounted for 8.43% market share as of december 2016. therefore, microsoft has died windows 8.1.