I bought a notebook with pre-installed Windows 8. Unfortunately there is no Windows 8 DVD supplied with the notebook. Assume the hard disc or system crashes: From where do I get a windows 8 DVD for new installation? When I go to system info in Windows 8 I can see a Product ID .....-......-..... Is this the serial number for Windows 8? Can I use this Product ID to re-activate Windows 8 again? What about the Windows 8 installation source? As far as I found out I have to use some "Backup/Recovery" tool from Windows 8 to store the current installation onto an external drive (and restore it (if necessary) from there). Where exactly do I found the recovery/backup tool in Windows 8? Does it store the full partition structure from the hard disc?