I installed Ubuntu with Kodi on an Asus Chromebox but have no sound.
I would like to uninstall Ubuntu and start again, can any body tell me how to do this?
Simply create an Ubuntu bootable USB stick (see : How to create a bootable USB stick on Windows)
Launch the installation by booting on the USB stick and simply select :
Erase Ubuntu 14.04 and reinstall.
on the allocate drive space step.