Pink artifacting around letters sometimes

Solution
I was thinking "failing video card" as well.

Which is why I posted...."Many times....when you see artifacts, it's the sign of a failing graphics card.".
Many times....when you see artifacts, it's the sign of a failing graphics card.

Are you sure they are the result of you installing the software....because I would find that a little odd.

If it IS due to the software....I'd uninstall it to see if it goes away.

Perhaps Windows 8.1 medial center hijacked your graphics driver and changed it?

I would check that.
 
I will try installing win 7 and that maybe will fix the issue because when I downloaded the drivers for win 8.1 from amd's website they were really outdated like from 2017 so maybe thats the problem?