I installed windows 7 a few months ago while my SATAs in my bios were configured as IDE. When I change it to AHCI for an added speed boost, I get a BSOD on startup. Is there a way or tool I can use to get my OS to boot in ahci mode without reinstalling windows?
I tried the windows recovery and start up fixes but they did not work.
Thanks
Yes, the tool is regedit.
You need to enable the AHCI part. Then shut down, turn AHCI on in the BIOS and boot into your faster system.
I had a post somewhere on StackExchange describing how to do that. I will look it up and link to it. Meanwhile try HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services. Look for msahci and change the value to 0.
Edit1:
Someone else answered the same thing but even added screenshots. That post is here on superuser question 110927
Edit2: My old post AHCI mode gave me two boot options.
Start Regedit
Open HKEY_LOCAL_MACHINE / SYSTEM / CurrentControlset / Services
Open msahci
In the right field left click on "start" and go to Modify
In the value Data field enter "0" and click "ok"
exit "Regedit"
Reboot and enable AHCI in the BIOS
