Please don't forget to keep you personal files, if you want to downgrade to Windows-7 or Windows-8 / 8.1. Start Windows 7 or Windows 8 / 8.1 and insert the Windows 10 installation DVD or USB-Stick. You need ~ 15 GB of free space on you install partition HDD or SSD for Windows-10 Upgrade, in this example on C:\. An upgrade from x32 to 圆4 or 圆4 to x32 is not possible. (. Yor can upgrade from Windows 7/8.1 圆4 to Windows 10 圆4 or from Windows 7/8.1 x32/x86 to Windows 10 x32/x86.
