How have you configured SATA in the BIOS?
Go into the BIOS>> Advanced >> Drive Configuration >> Configure SATA as ?
If it is configured as IDE, then there is nothing that you can do to make it a RAID.
You will need to reinstall Windows and load the F6 driver and of course configure sata as RAID in the BIOS, where you will need to have 2 drives minimum.
All the best,