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Windows 7: AHCI mode and driver boot problem

24 Nov 2013   #1

Windows 7 Ultimate x64
AHCI mode and driver boot problem

Hi there,

some time ago I switched my SATA controllers from native IDE to AHCI mode via regediting the "Start" parameters of msahci and pciide. After rebooting and swichting to AHCI support in the BIOS, Windows installed the generic AHCI drivers. Afterwards, I replaced those with AMD AHCI drivers.

Recently, I flashed my BIOS, naturally reloading CMOS default state. This of course lead to the system running in IDE mode again. The registry values have stayed the same, but my system won't boot when switching to AHCI mode again in the BIOS ("Loading Operating System... A disk read error has occured, press CTRL. + Alt. + DEL. to restart.").

What do I have to do do get my system running in AHCI mode again? I already thought about uninstalling the AMD AHCI drivers, as a brief boot information screen shows that the system is trying to use those to boot, instead of using the generic Microsoft ones. The Catalyst Installation Manager doesn't provide me with the possiblity to uninstall those though. Any help is very much appreciated!

My System SpecsSystem Spec
24 Nov 2013   #2

Windows 10 Pro

In your bios, make sure ahci is selected under disk type.
My System SpecsSystem Spec
23 Oct 2014   #3

Win 7-64 Home Premium
AMD AHCI Problem

Andrew, I have same problem that 7R4C3 has. We both tried the bios change to AHCI.

I had mine that way originally and working fine, but after installing the new AMD drivers from Catalyst, the system would not boot. I had to change it back to IDE to boot. Now I can't delete the AMD driver or overlay it with new one. Catalyst says the driver is already installed and will not reinstall it.

Now I can't hot plug in my backup drive.

7R4C3, how did you fix your system?
My System SpecsSystem Spec


 AHCI mode and driver boot problem

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