Clean installation of Windows 7 on Inspiron 5423 (Intel® Rapid Storage Technology issue)

Hi people,

I've been trying to make a clean installation of Win7 SP1 64-bit (Home Prem OEM, previously pre-installed) with a support for Intel RST on my Dell Ultrabook Z14-5423.

I've been following this instruction: http://www.dell.com/support/article/us/en/19/sln286337/how-to-install-windows-onto-a-system-with-msata?lang=en

When it gets to the point where "No discs were found" I manually load SATA driver from a USB, exactly as instructed. I use this driver: https://downloadcenter.intel.com/download/17882, f6flpy6489.zip files.

Win7 installation properly recognizes the driver and tries to load it. However, nothing happens then. I get back to the point where "No discs were found”. So finally the driver is found on USB but not loaded. Looks like I don't have the right driver. The point is, however, that I use exactly what the instruction tells me to use (the link mentioned above).

Intel RST in enabled in BIOS during the installation.

Any suggestions?

Regards and greetings from Poland,

goosi