I can’t get AHCI mode to work on a Dell Optiplex 755. I’ve installed the drivers, but when rebooted in „RAID Autodetect/AHCI” mode, the system hangs. No Windows logo, no BSOD, nothing. Only a blinking cursor in the upper left corner. The system boots from CD in AHCI mode just fine.
UPDATE: I confirmed it to be a driver problem. When doing a clean install, the system boots fine. Can anyone tell me how to install the AHCI drivers after installing Windows? See solution below.