Maybe you have installed a lot of new fonts and maybe made some changes as a result of which some of your software are not working thing broke! In such a scenario, it might be a good idea to restore the fonts to their default settings in Windows 10/8/7.
Restore default font settings in Windows
To restore default fonts in Windows 10, Windows 8 or Windows 7, open Control Panel > Appearance and Personalization > Fonts > Font settings.
Here click Restore default font settings.
Windows 10 lets you block untrusted fonts to keep your Network safe. Learn more about it.