So after installing a game recently (FallOut 4) to be exact, I've had this one issue. Please see the attached picture.
My system windows explorer font went to .01, not 1 pt, .01 pt. Its completely unreadable.
The problem, I suspect came from the game and interaction between either browsers or Windows Aero. I've been unable to find the setting to change them back to normal. I've looked in Windows Color and Appearance, changing the active tabs and all that kind of thing. No joy. I first noticed the issue on my browser having all of the shortcuts on the bookmarks toolbar for both Firefox and Chrome having every single book mark I've ever made smashed down to a bar about 4 inches across the scree and each one having a different color.
Help! I'd really rather not rebuild the machine to fix this issue.
Chrome and Firefox reset back to normal after running the game again. Since then, just a windows problem.