Cant install Win 7 on my Asus X751MD

Confirm you have latest BIOS update in BIOS setup vs. PC's Support Downloads webpage BIOS update.

What are the settings choices related to CSM, Legacy BIOS, Legacy Boot, UEFI, EFI, Boot Priority order?

Did you format flash stick installer using Option One of UEFI Bootable USB Flash Drive - Create in Windows

Are flash stick or DVD being booted as a UEFI device?

i think i tried with the usb flash but ill give another go...as for the settings in the BIOS options ill have them in day or so...

i think ill do the step 10. If Using a Windows 7 or Windows 8/8.1 Installation DVD.......think it will work?

Which Step 10? You mean post #10 above?

no step 10 from UEFI Bootable USB Flash Drive - Create in Windows

Step 10 is in Option Two. I specifically said to use Option One. Try that again and watch that the settings don't slip from exactly as pictured when you add the ISO.

I have a original win7 dvd how can i create a usb flash drive with rufus?

The DVD would be the most stable method.

Please go back to the top of this thread and complete each step and answer each question that was asked. We have no idea what you've done when you didn't reply to a single step I gave you and therefore cannot help you get Win7 installed as we do for everyone else who cooperates.

Are you booting the DVD as a UEFI DVD drive?

Is the UEFI firmware (BIOS) the latest version and has Secure Boot been disabled? What about the other settings choices I asked you about. Why did you not even bother to answer?