is it possible and easy to install windows 8.1 or more on a sony tablet xperia Z2 (its OS is an android and I don't like it)
Hi,
No, you can't install 8.1 on it.
https://talk.sonymobile.com/t5/Xperia-Z2/Install-Windows-8-1-on-my-Xperia-Z2/td-p/869275
Cheers.