Harmy said:
Well, I went to bios, changed all the booting options to UEFI only (some were set to Legacy) and after restart, it didn't recognize the DVD as a bootable device.
Not sure if this will help, but when I recently setup my Asus MB I recall reading that to boot a DVD the SATA port needs to be set to IDE mode and not AHCI. I wound up using bootable USB pre-formatted with a Win7 USB format utility from MSFT.