Windows 7 does not boot after I changed the SATA mode to AHCI Christian Donner, April 1, 2010 The SATA controller’s mode of operation cannot be changed to AHCI after Windows 7 is installed, because the AHCI driver will be missing and the system cannot boot. Here is how to address this without repairing or re-installing Windows. With the SATA controller still running in IDE mode, start the registry editor as administrator. To do that, type regedit in the Start menu’s search box (without hitting Enter), then right-click on the single search result in the Programs category, and select Run as administrator. Then navigate to the key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\msahci. Edit the value for Start and set it to 0: AHCI fix in the registry Then shut down normally and enter the Bios setup while rebooting (by pressing F2, Del, or whatever applies to your hardware). Now you can change the IDE mode to AHCI and Windows will load the AHCI driver the next time it starts up. Related Posts:Enphase Envoy Local AccessThe Great Cat Litter Poop OffA box of SUTABAmazon threatens customer of 26 yearsTyreWiz not working after battery change Hardware Information Technology AHCIbiosbootWindows 7
Hey there, I installed windows 7 64 bit to my SSD as IDE, and stupidly changed it to AHCI in the bios ( i didn’t know you had to edit the registry first) and now the computer won’t boot successfully, I can’t change it back to IDE…….any ideas how I can install said AHCI drivers to my SSD? I’m on another computer at the moment, is there something i can do via usb?
@ Jay Hunter. Sort of the same thing happened to me, fixed it by: 1. disabled ahci in bios 2. insert win 7 disc and boot normally (optionally : f12, select boot device) 3. run Startup Repair (mine said it couldnt fix the problem, but when I rebooted everything was back to normal anyways)