Try a System Restore to a date before you installed the "Windows Genuine Authenticity stuff", see if it cures the problem. If it does then you'll know what has caused it. Start > Programs > Accessories > System Tools > System Restore.
Galaxy Note 8 vs iPhone X
Awful clip art from 1994 is being tweeted every hour by a bot
iPhone X vs Samsung Galaxy Note 8
Les meilleurs navigateurs internet 2017