Click on Start in the bottom left corner of your desktop.
Type 'control' and click on Control Panel.
Control Panel will open.
If necessary, set View by: Large Icons (1).
Find icon Region and Language and open it (2).
In the open window switch to Administrative (1).
Click on button Change system locale (2).
Select option Serbian (Latin, Serbia).
Confirm the settings by clicking on OK (1).
Click on the bottom button OK (2).
Restart your computer.