Windows 8 and 8.1 Forums

Windows 8 takes too long to boot

  1. #1

    Portland, OR
    Posts : 64
    Windows 8.1 Pro

    Windows 8 takes too long to boot

    I bought my Dell desktop about 3 years ago. Since then I replaced the HDD with a new Samsung SSD and reinstalled Windows 8 on it. After that it started running really fast.

    I usually don't reboot it too often, I do it maybe once a month after installing updates. What I've been noticing lately is that it takes progressively longer to boot this desktop up. I initially thought that the SSD was going bad, so I cloned it 1-to-1 to the original HDD that the desktop came with and that I never used, but the boot time didn't change. I timed it today and it took about 5 minutes to boot up while showing this window:

    Click image for larger version

    Any idea what's going on and how to fix it?

      My System SpecsSystem Spec

  2. #2

    Check speed of SSD CrystalDiskMark Portable | - Portable software for USB, portable and cloud drives
    When you changed to SSD, did you set AHCI mode in BIOS ? Some SSD functions like TRIM depend on it. If not engaged it will start slowing it down with time.
      My System SpecsSystem Spec

  3. #3

    Portland, OR
    Posts : 64
    Windows 8.1 Pro

    Mike, I do not have AHCI in my BIOS per se, it is set on RAID. I made a picture:

    Click image for larger version

    To be honest I'm somewhat concerned about changing it to AHCI now because of that warning on the side. I remember some time ago I had to repair Windows installation after playing with settings like that.
      My System SpecsSystem Spec

  4. #4

    AHCI mode is essential for SSD to work properly.
    There are multiple ways to adjust windows to work with AHCI mode, here's one tool: Windows 7 ? Enable AHCI after a install using IDE or another Raid type controller | Joshs Wasteland
    Or registry hack :
    You start with step 1 while you are still in windows in IDE mode.

    1) Run the Registry Editor (regedit.exe)
    2) Navigate to Registry Key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
    3) Set the "Start" value to 0 (zero)
    4) Navigate to Registry Key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Pciide
    5) Set the "Start" value to 0 (zero)
    6) Shut down
    7) Start up again, but before Windows boots go into the BIOS configuration screens and change the disk mode to "AHCI". Save the new BIOS configuration and restart so that Windows boots.

    When Windows starts, it will detect the change, load new disk drivers, and do one more reboot to start up with them.

    None of it is too difficult.
    Or just reinstall windows with AHCI mode set.
      My System SpecsSystem Spec

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