When you say sound is 100 is that in Media Player?
Try Start > All Programmes > Accessories > Entertainment >Volume Control and check that the volume settings are correct.
It also sounds as if your Autoplay is turned off.
For that try click here
Xiaomi Mi Mix 2 review
Halloween Photoshop & Illustrator tutorials: 20 step-by-step guides to creating spook-tacular…
iPhone X news: Release date, price, new features & specs
Comment créer, modifier et réinitialiser un compte Apple ?