My last post was meant to say: "it didnt work" :)
I still need help! Meanwhile I found out that windows 10 erased my Windows.old directory, so my situation has gotten worse, no way of getting back to 7 :(
Right now: I have an unactivated windows 10 on a laptop which had windows 7 legally (same edition i think). The wonders of licensing.
Acer doesn't want to help and neither Microsoft.