This is tutorial how to install Windows 7 on UEFI Class 3 Mode (GOP Mode)
Okay so first, we will create USB Boot, in this video i'm using Anh-dv Boot, and Windows 8 PE. You can skip if you already had Win PE in your USB. 2:14 for the next step.
This machine is using UEFI Mode, Secure Boot is disabled
Plug your USB Boot and restart
Run BIOS and change the Boot Mode to CSM (some another BIOS, it's Legacy)
As you can see, this machine only had 2 options: UEFI or CSM, and dont have options like: Legacy Suppport/CSM Support or UEFI with Legacy
Boot into USB
Boot into Win 8 PE
Copy menu.lst to USB\boot\grub. This is the GRUB Menu.
Copy memdisk to the root folder of USB.
Open Minitool Partition Wizard and create the Windows 7 partition
In this video, i set the partition space is around 30GB
Uups.. I forgot to format the partition.
In this video, i used Ghost for Windows 7, if you have iso file you can extract the wim file to your Windows 7 partition or run the Setup.exe inside the iso file. (If you run Setup, need to boot Win PE in UEFI Mode, because Win Setup will not let you install in GPT Disk because you are booting in CSM Mode)
When it finished, run CMD and type each command
Can copy paste for faster
Remember to select your 32MB disk
Remember to type your Windows 7 partition correctly
Copy bootmgr.vhd created before to the root folder of USB
Restart and choose line 8
If you meet this, dont worry, restart your computer and press Shift + F10 to open cmd
type: cd oobe
type: msoobe
Type your User name, PC name
Select Ask me later
Restart PC
Select line 8 again
After you come to the Desktop, find and install your Graphic Driver
I already downloaded it here
After installed, restart the PC
So the driver was installed successfully, now let's restart the PC and boot into Win 8 PE to do the step 9
Open Minitool Partition Wizard and set the letter of EFI Partition to S
Open cmd and continue typing some command
Remember to edit your Windows 7 Partition letter
Open BootICE, select BCD and choose your BCD file in S:\EFI\Microsoft\Boot
Select Easy Mode
Select Add, New Windows 7/8.1 Entry
OS Title is Windows 7
Disk: Select your disk that you installed Windows 7
Partition: Select your Windows 7 Partition
Change winload.exe to winload.efi
Remember to change the timeout if you had dualboot with Windows 10
Now restart your PC and load BIOS, change the Boot Mode back to UEFI, disable the Secure Boot
Now the Windows 7 will boot in UEFI Mode without any problems
