You can restore the default font and remove any changes that you've made to your display settings from Appearance and Personalization.
1. Open Fonts by clicking the Start button, clicking Control Panel, clicking Appearance and Personalization, and then clicking Fonts.
2. In the left pane, click Font settings.
3. Click Restore default font settings.
This also removes all manual changes that you've made to your display settings.
I've listed couple of links that could be of assistance to you.