Install zawgyi font. Beside of, I got everyday new updates from Microsoft server, That's why I disappointed with performance of new OS, That's why I format it and again install windows 8. Thanks for providing us great information and support. Last week, I read at your blog as Microsoft has stopped continually updates and now we may use constant windows 10, So I purchased its license and upgraded my OS. Now its working well. I upgraded early from my Windows 8.1 Professional operating system to Windows 10 home OS being bought MS legal license from, Which took 5 hours due to the internet slow speed, But faced many technical issues.