How to CLEAN INSTALL Windows 7 Professional 64Bit on Dell Inspiron 15R Turbo / Special Edition laptop?
Solution 1:
I had the same problem, but found I could install Win 7 Pro if I changed the BOOT mode to "Legacy; Secure boot: OFF".
Note: At the end of my install I had no network drivers loaded, so had to download these from Dell copy them across to the laptop and then perform an installation. Once installed I had network/Internet access and could complete all other software upgrades directly from the laptop.