Method 1:
1. open the computer and find the file c:/windows/resources/themes/aero/zh-cn;
2. Then rename the aero.msstyles.mui file to the name of the desired theme, such as the AeroClear theme, and change the name to Aeroclear.msstyles.mui; ;
3. Then click Personalize, and then you should be able to switch themes at this time.
Method 2:
If the theme cannot be changed, the aero.msstyles.mui file may also be lost. Therefore, if this method fails, you can try to copy it from another computer or online. Then put it in the folder above.
The above two methods are tried according to your own needs, hoping to help you.