15 October 2014

This tutorial shows how to install Window 7 instead of Windows 8 on Sony VAIO. The process might also be called downgrading.

  1. Go to BIOS, by pressing Assist button instead of power button when your computer is shut down.
  2. Disable safe boot and set boot mode to Legacy instead of UEFI.
  3. Now Windows 7 cd should boot.
  4. Proceed with the installation until you see the partitions. In custom mode you have to delete all partitions before you can install.
Windows 7 doesn't support UEFI or GPT partition table.