Hello there! It sounds like your PC may be experiencing some trouble with its system fonts. Here are some steps you can try to fix the issue on your Windows 10 computer:
1. Restart your PC - Sometimes a simple restart can solve the issue.
2. Run the SFC (System File Checker) tool - The SFC tool will scan your system files for any issues and will fix them automatically. To run the SFC tool, click on the Start menu > Type in 'CMD' in the search box > Right-click on 'Command Prompt' and select 'Run as administrator' > Type in 'sfc /scannow' and press Enter > Wait for the process to complete.
3. Restore default font settings - If the fonts have been changed, restoring the default font settings may help. To do this, go to Start Menu > Type in 'Control Panel' > Click on 'Appearance and Personalization' > Click on 'Fonts' > Select 'Font settings' from the left-hand side menu > Click on 'Restore default font settings'.
4. Clear the font cache - Clearing the font cache can sometimes resolve issues with fonts. To clear the font cache, go to Start Menu > Type in 'CMD' in the search box > Right-click on 'Command Prompt' and select 'Run as administrator' > Type in 'c:\windows\system32\FNTCACHE.DAT' and press Enter > Wait for the process to complete.
5. Reinstall the affected applications - If the issue persists, try uninstalling and reinstalling the affected applications.
I hope these steps help resolve your issue. Let me know if there is anything else I can do to assist you.