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cant install AHCI Driver in vista

Discussion in 'Windows Vista' started by ratsrude, Dec 3, 2007.

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  1. ratsrude

    ratsrude Thread Starter

    May 18, 2005
    Hi Guys.

    I am hoping someone can help. I am having trouble installing the AHCI driver when doing a clean install of vista 32bit.
    The trouble is that I can get to the point of installing the driver but when I click to the next step two Things happen.
    1. is that I get a screen saying that the drive may not boot correctly
    2. and when it goes back the the screen that shows the hard drive that I was going to install to the drive is no longer present. Infact there are no drives to choose from. I was wondering if anyone may have had the same problem or may know the answer. Here are the specs ot the system that I am trying to install to.
    M/B Gigabyte GA_P35_DQ6
    H/D'S Seagate 500G/B Sata x2
    Video Gigbyte 8800GTS

    I have tried drivers from the M/B c.d that comes with system and also the driver from the web site.

    Thanks guys and I look forward to hearing from you

  2. The_Snowman


    Oct 18, 2005
    Advanced Host Controller Interface (AHCI) mode is a BIOS option in my computer for the SATA hard disk controller. It lets the OS use Native Command Queuing (NCQ/aka SATA mode) to reorder disk read or write requests to make the reading and writing more efficient, particularly if the disk is very busy.

    My BIOS has options IDE, RAID, or AHCI mode. RAID includes all of the ACHI features and Intel recommend that you choose the RAID before you install an OS because changing it afterward can be painful (or "unsupported" if you have an Intel motherboard!).

    The process in Vista seems to be less painful than in Windows XP because VISTA includes AHCI drivers by default. However, if AHCI mode was not enabled at the time you installed Vista then the new drivers will not be loaded, and if you change the BIOS setting then Windows doesn't boot.

    Simple solution:

    Start with IDE mode selected in the BIOS, and boot Windows Vista.
    Exit all Windows-based programs.
    Click Start, type regedit in the Start Search box, and then press ENTER.
    If you receive the User Account Control dialog box, click Continue.
    Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
    In the right pane, right-click Start in the Name column, and then click Modify.
    In the Value data box, type 0, and then click OK.
    On the File menu, click Exit to close Registry Editor.
    Reboot, and change to AHCI mode in the BIOS. Windows will detect some changed hardware (anything connected to a SATA port).
    For good measure I downloaded and (re)installed the chipset drivers for my motherboard. I have an my motherboard uses an Intel G33 chipset and I wasn't sure if I needed to install the Intel Matrix Storage Manager, but when I tried it told me that I already had a more recent version of the software installed. I guess part of the chipset driver package overlaps with the Storage Manager software
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