Hello,
The hard disk of my ACER note-book has been damaged and i replaced it without having any backup of my windows 7. I need to install the windows again. Is there any way to reinstall them using my product Key or the note-book serial number?
yes, just find an oem windows 7 dvd, install it and register with your own key. The key is not linked to the dvd, so any dvd with the same version should do.