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"A required CD/DVD device driver is missing" upon windows 7 install
I've been trying to install Windows 7 on my Asus Q501L (which came with W8 already installed) via USB. I faced a problem - while the laptop was able to start the initials steps (the black screen where it shows the copying process of the Windows 7 files), i couldn't go any further than the step at which i need to choose a partition to install the OS on.
It simply says " A required CD/DVD device driver is missing" - when you start Windows 7 or Windows Vista from the setup disk". I tried Shift-F10 to start the CMD and format the HDD (NTFS format) on the spot, restarted, same error message. I disabled Fast Boot in the BIOS, the SATA controller is set to AHCI. I tried several topics @ Tom's Hardware forum, and elsewhere but i still cant find a definitive answer.
I read that maybe i should change the AHCI controller to IDE, only issue i face is that in BIOS i get no options - there's only AHCI as a choice, no IDE, no RAID.
Any Ideas? How do i get IDE controller option to appear in the BIOS settings (via the registry keys, or maybe i need to download that IDE controller (not sure if thats possible)) from the Intel's website (intel core i5 is the CPU of my laptop if that's of any help)?
Thank you