I have a Dell E6420 with a SSD.  I installed an image using ghostcast server. 

When selecting AHCI in the bios for the Sata option.. it blue screens when 

trying to load windows.  It only works when ATA is selected.  

This is a problem because I want to activate Trim.  

I have this same problem when installed on a hard drive.  I can NOT select 

AHCI or Raid On.  ATA has to be seleced for the hard drive to load windows. 

please advise