Septik, I googled the word alimentation, no computer term shows up. You must mean the motherboard. In that case, without a call to Microsoft, you won't become genuine.
Just call them and explain the situation. Be polite & don't argue with the rep. There's a good, but not guaranteed chance that you'll be re-activated. You'll have to follow some instructions given to make it genuine. Usually by typing in a long string of numbers & letters, is the way it works.
Best of Luck,
Cat