After a failed upgrade to win10 I tried to come back in win 8.1. The stick started a looping boot and didn't work.
So I tried to install windows again pressing F8 but I get an error.
So I tried to install a new copy of windows 8.1 but the system ask me for a Microsoft keycode wich didn't compare on the box.
How cai I proceed? Is it possible to have a code?
Thanks in advance and sorry for my english :-(