How to Downgrade Windows 8 Preinstalled to Windows 7

This tutorial will show you how to downgrade your Windows 8 Preinstalled with or without Secure Boot to Windows 7.

• Open an Elevated Power Shell in Windows 8
• Type confirm-SrcureBootUEFI

If TRUE, your uEFI BIOS is set to Secure Boot, go to Step 3 below.
If False, your uEFI BIOS is not set to Secure Boot, NO need to reset uEFI BIOS. Go to Step 4.

• Reset BIOS to default, and reboot to BIOS make sure Secure Boot is disabled.

Note: Check your manufacturer's uEFI/BIOS firmware manual for settings.
You may also need to make sure CSM is ENABLED, & set to UEFI boot.
enable Boot Menu.
Enable BIOS Password.

• Startup Options Menu - Boot in Windows 8
• Secure Boot - Enable or Disable in UEFI

 

How to reset your UEFI Bios Firmware From Windows 8

Toshiba How -To:Resetting your UEFI Bios Firmware on Windows 8 - Youtube

Note: Example above, uEFI-BIOS is from a Fujitsu P400

New AMI Fujitsu uEFI-BIOS, plus other OEM manufacturer's.

AMI | American Megatrends Inc : Aptio® V Launch Hardware Showcase

• Boot from your UEFI 64-bit Windows 7 DVD or USB using the one time boot menu.

Note: If you do not have UEFI 64-bit Windows 7 DVD or USB, then you can create a UEFI USB using the tutorial below
 UEFI Bootable USB Flash Drive - Create in Windows ( Coming soon...)

• Press enter on UEFI DVD drive

 


 Follow this tutorial:
     UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums.

• Delete All Partitions. (In Drive Options)

  

•  Remake partitions. (In Drive Options)

• And then Reboot Pc to Install.

All Done.

Warning
DO NOT ENABLE SECURE BOOT AFTER INSTALLING WINDOWS 7 OR ELSE WINDOWS 7 WILL NOT BOOT.