You should try this
1. bring up the Start Menu -> Settings
2. click Applications
3. pick Apps & Features (on the left)
4. choose Manage optional features (take care it's in small in the middle of the screen)
5. choose Add a feature
6. find Japanese Supplemental Fonts and install it
Anyone have sound issues on win7 can try download update from link below , its worked for me
https://support.microsoft.com/en-us/help/2533623/microsoft-security-advisory-insecure-library-loading-could-allow-remot