Text has become hard to read

My computer recently did a disk check because of a perceived problem. Since then my text has become hard to read and nothing I do in the settings options makes any difference! Any ideas?

Are graphics OK too? Could the screen resolution have changed, either in Windows or on the monitor itself? Need more info to assess...

Hi there. The resolution is still at 1920 x 1080 at 60 Hz on the monitor and windows!