Riješeno...
Inače, ta promjena fonta se zna događati zbog instalacije/reinstalacije igrica.... To je bio moj razlog...
Ako netko imao ovakve probleme, evo rješenja..
To fix this issue follow these steps:
1. Click Start -> Run. If you cannot locate the 'Run' item, then click 'Window Key' + 'R'.
2. In the run box, type: c:\windows\fonts (Replace c: with the drive letter where the OS is installed)
3. The fonts window will open. Click 'Alt' + 'F' to activate the menu. Click 'Install New Font' in the menu.
4. In the folders dialog, browse to c:\windows\fonts where c: is the OS drive letter.
5. All fonts would now appear under 'List all fonts'.
6. Click 'Select All' and then click 'Install'.
7. Confirm the windows permission dialog.
8. A replace file dialog would appear. Click on 'Yes' to each and every dialog that appears. This will ensure that fresh entries for fonts are written in the registry. To avoid clicking, press and hold 'Alt' key - then press 'Y' key for every dialog that appears.
Onda restart.