Whenever you encounter squares in Windows 8 software dialogs, file names, menus instead of e.g. Japanese characters like in ç«.txt, you do not have the corresponding language pack installed.
The solution is fortunately easy.
Make sure you are logged in with administrator rights.
First open the Windows control panel. If you don’t know how to find it, take a look here.
Next, click on Languages. You should see something like this:
Click Add Language. And select the desired language. Here we go for Chinese (Simplified).
Chinese (Simplefied) has regional settings as well. We pick one.
Now we are back, and see our changed language preferences. We can see our changes in the list, but the new language pack is not installed yet.
So we double click it, or click on Options, to open the Control Panel – Language Options dialog again. Here we chose to Download and install language pack
Here is the installation process. Depending on the selected language, and the already installed languages the packs are quite big, eg. 80 MB or 147 MB.
  
 
You may need to restart your Windows.
Now you should have the fonts installed, and should not see any squares.
Hope this helps… Just let me know. Currently it looks that the installation of additional language packs do not work under all circumstances. I have to dig deeper into it, and will come back with another article, soon.
For older Windows versions like Windows 7 or XP please check Janusz’ article here.
Renate
