I'm new here guys and I just wanted to ask, how can I enable AHCI mode in my laptop which has an intel PM 55 motherboard. I tried looking for it in the BIOS but it isn't there and I'm afraid of tinkering with the regedit by setting the values of msahci, pciide and iaStorV to 0 as i may accidentally lock myself out of the system. I'm doing this so that I can run my 34mm express card usb 3.0 at higher speeds. thanks guys!