Many people use systems to beautify theme packages. When you delete it, or when you delete it in China and Malaysia, the fonts are also deleted, such as the font of Song style, or the font of your theme and so on. Don't download fonts such as Microsoft Yahei font, it's useless, because the system basically uses fonts such as Song Dynasty, regular script and new Song Dynasty. If the fonts needed to beautify the theme desktop are not available in the system, then all fonts will become boxes.

If not, replace the files under E:\WINDOWS\Resources\Themes with the same files you copied on other computers, then change the theme to the classic theme of WINDOWS, and try again with the theme of WINDOWS XP. It is best to replace the replacement file in safe mode.

2, regional language settings.

Control Panel-Regional and Language Options-Options and Advanced are China.

3. Internal coding of the system.

In the process of browsing the web, I accidentally clicked on the coding option, made an operation error, or other unpredictable circumstances. Due to coding errors, all fonts will become boxes. Open the webpage, right-click the blank space-Code-and select "Sample Chinese".

4. The font library is damaged.

Similarly, many unpredictable problems cause the font library of the system to be destroyed. If the font library is destroyed, the characters needed for system display will not exist, and of course the font will become a box. You can download an overlay font library from the Internet, or back up the font library in someone else's computer and try it on your own computer. All files in the x:\windows\fonts directory will be copied to your machine.