Very simple!
Here is how,
1. Go to Control Panel and select Regional and Language Options
2. Click on Languages tab then select 'Install files for East Asian language'
3. Presumably, there is 3rd 'last' tub, guessing advance: select 'put check mark' on 3 unchecked Korean
4. Also from 'Regional Options' Select an item to matcch its preferences for Korean
Above will resolve the issue. Else message me.