After the format, and more precisely in the final stage, I have to choose a language. I can't do it because my mouse and keyboard don't work. Previously, they worked, and when I start the computer I have the impression that the keyboard is working, and exactly the capslock diode lights up for a moment. I am stuck in the language selection screen. I tried to change the mouse and keyboard but it didn't help. I also restarted with the same success.