Corrupted Font cache – According to some affected users, this problem can also occur due to a fon cache issue.
reg file capable of overriding every custom font value inside the Registry Editor.
In this case, you should be able to fix the problem by creating a.
Corrupted Font-related registry key – If you can’t reset your OS fonts using Control Panel or the change doesn’t register, chances are you’re dealing with some kind of corrupted registry key that is storing font information.
In this case, you should be able to fix the issue by resetting to the default font settings using the Classic Control Panel interface.
An illegible font is selected – In most cases, this problem will occur due to a user-selected font that is not meant to be used as the default choice for the OS.