Windows 8.1 Pro x64 UEFI very slow boot and shutdown

Anonymous
2013-10-19T09:35:27+00:00

Ever since I upgraded to Windows 8.1 via the in-store update my PC takes a good 3-4 minutes to boot!!! I am on a GA-X79-UD3 + i7-3820 + Samsung SSD 840 for system drive. I have updated all my drivers to Windows 8.1 compatible ones and still. I have checked via Samsung Magician and the drive is using AHCI mode on (Intel PCH) Sata 3 6Gb/s.  I have tried restoring my UEFI to default settings and enabling Fast Boot but still?? On Windows 8 it would boot in 5 seconds....

EDIT: Have tried Safe Boot and Clean Boot, still same

EDIT2: Will any Microsoft guy chime in?

Windows for home | Previous Windows versions | Performance and system failures

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  1. Anonymous
    2014-01-08T23:39:08+00:00

    8.1 would HANG UP ON SHUTDOWN on my PC because of the Qualcomm Atheros AR3012 Bluetooth drivers that installed with my KILLER WI-FI card.  If you have a Killer Wi-Fi card and/or Atheros drivers you probably have the same problem.   Go into Device manager and uninstall them and then when  you restart 8.1 will update the drivers with generic Microsoft 8.1 drivers and you are good to go.

    EXCEPT THE NEXT TIME YOU USE WINDOWS AUTOMATIC UPDATES IT WILL REINSTALL THE QUALCOMM DRIVERS.  Watch for that and when you see those automatic updates "HIDE" THEM while we all wait for Qualcomm to get it together and come up with the right software.

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  3. Anonymous
    2014-01-09T12:27:24+00:00

    I may have found the solution to why my new ASUS laptop became extremely slow to shutdown after upgrading to Win 8.1. Took me 2 days of almost constant debug but found that disabling the Qualcomm Atheros Bluetooth driver dramatically reduced the shutdown and start up times to where they are now as fast or faster as they were with Win 8.

    Speed reduction has remained after many start up and shutdown cycles.

    Thanks for this. I had a very slow shutdown but after doing a system restore to just before the Qualcomm drivers updated fixed the issue.

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  4. Anonymous
    2014-01-13T09:42:41+00:00

    After 2 monthes of problems without help and answer of Microsoft, i have reinstall Win 8 Pro (without 8.1 Update, 2 days of hard work) and my Dell XPS is now fast and boot in 20 sec max, stop in 10 sec max. My conclusion about this scandalous Win 8.1 Upgrade : boycot it !!

    Same problem : Boot is now X4 with Win 8.1 compared to Win8 !! (Dell XPS i7, Win Pro 64bits)

    I have tried different tests (with and without TuneUp, Bitdefender, etc... looking for a new user profile, changing advanced parameters in boot via msconfig...) no major result to decrease boot time.

    A lot of people are claiming (english, french...) on this incredible problem which is "indigne" (i am french) of Microsoft without any answer from their side.

    I am very angry again MS !!

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  5. Anonymous
    2014-01-13T14:15:19+00:00

    I'm having the same problem. I've sony vaio i5 6gb Ram and 750 HD. before win 8.1 it takes 30 sec max but now on 8.1 it takes approx 2 min. Is there any solution or it's 8.1's bug ?

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