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Thread: Vista 100% cpu usage after bootup / windows update

  1. #1
    Robert Guest

    Vista 100% cpu usage after bootup / windows update

    I have 2 pc's running vista Home premium. As of the morning of 5/7/08, both
    of them are having an issue after bootup where cpu usage is near 100% for
    about 20-30 minutes. The computers are completely un-usable in this state.
    Looking at resource monitor(which takes about 10 minutes to load), both are
    showing svchost (netsvcs) PID 1456 at 100%. After this initial 20 to 30
    minute lock up session, both computers seem to work fine. After investigating
    the issue a bit, it has something to do with windows update. If I go to
    control panel windows update, and try to update, the same thing happens.

    Not sure if this means anything but both computers have update KB940510
    under the windows update control panel console, dated 5/7/2008. From
    researchign this update it is something to do with windows validation. Both
    PC's have OEM installs of vista, so I dont 'think' the validation is the
    issue.
    I know this isnt a hardware issue as one of the pc's is a HP laptop, the
    other is a Dell xps desktop.
    Both computers have had 0 issues before the morning of the 7th, and both
    have AV software and have had no signs of a virus.
    I have not installed anything on either of the computers lately. Neither
    share much of the same software beside antiviurs. (CA AV 2008)
    My xp and windows 2000 machines are working fine.

    Any help would be much appreciated. Currently, disabling windows update
    seems to solve the issue but this is not a long term solution, IMO.

    Thanks

  2. #2
    8n20_C# Guest

    Re: Vista 100% cpu usage after bootup / windows update

    "Robert" ha scritto:
    > I have 2 pc's running vista Home premium. As of the morning of 5/7/08,
    > both
    > of them are having an issue after bootup where cpu usage is near 100% for
    > about 20-30 minutes. The computers are completely un-usable in this state.
    > Looking at resource monitor(which takes about 10 minutes to load), both
    > are
    > showing svchost (netsvcs) PID 1456 at 100%. After this initial 20 to 30
    > minute lock up session, both computers seem to work fine. After
    > investigating
    > the issue a bit, it has something to do with windows update. If I go to
    > control panel windows update, and try to update, the same thing happens.


    Incredible!!! I have found a person who has the same problem i have had with
    XP since two years!!!

    Yes, it depends on WU, but i've never understood why.
    The workaround i found is to download Process Explorer, put it on
    automatic startup, and when Windows starts select the svchost instance,
    right click on it, and choose "idle priority".

    This way, even if it uses all your CPU resource, your PC will respond to
    your commands and to the other applications.

    Bye!



  3. #3
    Canuck57 Guest

    Re: Vista 100% cpu usage after bootup / windows update


    "Robert" <Robert@discussions.microsoft.com> wrote in message
    news:FBCF9B77-C6E9-40EF-A58E-0B49055F8526@microsoft.com...
    >I have 2 pc's running vista Home premium. As of the morning of 5/7/08, both
    > of them are having an issue after bootup where cpu usage is near 100% for
    > about 20-30 minutes. The computers are completely un-usable in this state.
    > Looking at resource monitor(which takes about 10 minutes to load), both
    > are
    > showing svchost (netsvcs) PID 1456 at 100%. After this initial 20 to 30
    > minute lock up session, both computers seem to work fine. After
    > investigating
    > the issue a bit, it has something to do with windows update. If I go to
    > control panel windows update, and try to update, the same thing happens.
    >
    > Not sure if this means anything but both computers have update KB940510
    > under the windows update control panel console, dated 5/7/2008. From
    > researchign this update it is something to do with windows validation.
    > Both
    > PC's have OEM installs of vista, so I dont 'think' the validation is the
    > issue.
    > I know this isnt a hardware issue as one of the pc's is a HP laptop, the
    > other is a Dell xps desktop.
    > Both computers have had 0 issues before the morning of the 7th, and both
    > have AV software and have had no signs of a virus.
    > I have not installed anything on either of the computers lately. Neither
    > share much of the same software beside antiviurs. (CA AV 2008)
    > My xp and windows 2000 machines are working fine.
    >
    > Any help would be much appreciated. Currently, disabling windows update
    > seems to solve the issue but this is not a long term solution, IMO.
    >
    > Thanks


    Could be an update?

    Me, I turn off automatic update and let everyone else test it first.

    Which you could do. Disable auto update, then remove any recent patches
    applied and see if they return to normal. And when patches are applied or
    removed, I always reboot even if it isn't needed.



  4. #4
    Robert Guest

    Re: Vista 100% cpu usage after bootup / windows update



    "Canuck57" wrote:

    >
    > Could be an update?
    >
    > Me, I turn off automatic update and let everyone else test it first.
    >
    > Which you could do. Disable auto update, then remove any recent patches
    > applied and see if they return to normal. And when patches are applied or
    > removed, I always reboot even if it isn't needed.



    As I mentioned in the OP, I disabled Windows Update and I am not having the
    issue. I would like a fix for the problem though as not using windows update
    is not a long term solution.


  5. #5
    Rich Bunevitch Guest

    Re: Vista 100% cpu usage after bootup / windows update

    On Thu, 8 May 2008 10:27:01 -0700, Robert
    <Robert@discussions.microsoft.com> wrote:

    >I have 2 pc's running vista Home premium. As of the morning of 5/7/08, both
    >of them are having an issue after bootup where cpu usage is near 100% for
    >about 20-30 minutes. The computers are completely un-usable in this state.
    >Looking at resource monitor(which takes about 10 minutes to load), both are
    >showing svchost (netsvcs) PID 1456 at 100%. After this initial 20 to 30
    >minute lock up session, both computers seem to work fine. After investigating
    >the issue a bit, it has something to do with windows update. If I go to
    >control panel windows update, and try to update, the same thing happens.
    >
    >Not sure if this means anything but both computers have update KB940510
    >under the windows update control panel console, dated 5/7/2008. From
    >researchign this update it is something to do with windows validation. Both
    >PC's have OEM installs of vista, so I dont 'think' the validation is the
    >issue.
    >I know this isnt a hardware issue as one of the pc's is a HP laptop, the
    >other is a Dell xps desktop.
    >Both computers have had 0 issues before the morning of the 7th, and both
    >have AV software and have had no signs of a virus.
    >I have not installed anything on either of the computers lately. Neither
    >share much of the same software beside antiviurs. (CA AV 2008)
    >My xp and windows 2000 machines are working fine.
    >
    >Any help would be much appreciated. Currently, disabling windows update
    >seems to solve the issue but this is not a long term solution, IMO.
    >
    >Thanks


    I'm having a similar problem with by Toshiba laptop with an OEM
    install of Windows Vista Home Premium. I turned off Automatic Updates
    and this solved the problem. Today, I changed the settings for
    Automatic Updates to just notify me of the updates - no download or
    install and the problem returned immediately. Fortunately, I was able
    to restart the computer in Safe Mode and do a System Restore - since I
    could find no way of changing the Automatic Updates setting in Safe
    Mode.

    I too did a virus scan with CA AntiVirus 2007 and no problems were
    detected. I do not have Vista SP1 installed yet.


  6. #6
    TechieBird Guest

    Re: Vista 100% cpu usage after bootup / windows update


    Rich, thank you so much for mentioning that you ran a virus scan with
    CA! I also have CA Antivirus, so it got me wondering if that might be
    the common factor between us all...

    Anyway, I snoozed CA AV and magically the processor usage dropped to
    normal thresholds. And when I thought about it, this problem did start
    occuring after an AV Engine update the other day. (The version I have
    right now is 31.4.0)

    So I googled for *"CA Antivirus" 100% CPU*, and found this thread:
    http://tinyurl.com/4fk4vu

    So now I have excluded .msi and .msp from the real-time scanner,
    restarted Windows, and it seems to be working normally now!


    --
    TechieBird
    Posted via http://www.vistaheads.com


  7. #7
    Ben Law Guest

    Re: Vista 100% cpu usage after bootup / windows update

    I am having the same problem with two PC's since around the 7th of May also.
    Finally I narrowed it down to program conflicts between the latest MS Windows
    updates and the CA (TimeWarner subscriber's free internet security suite). As
    soon as I disable the CA security suite both PCs, one with XP Pro and the
    other with Vista Home Premium all run normally with CPU usage reported as
    consistantly below 10% whith higher % only momentarily when I launch a
    program or two. CA at this time does not have a patch. Neither MS has any
    solution. I only wish the two company are willing to collaborate a bit more
    for the good of their customer.

    "Canuck57" wrote:

    >
    > "Robert" <Robert@discussions.microsoft.com> wrote in message
    > news:FBCF9B77-C6E9-40EF-A58E-0B49055F8526@microsoft.com...
    > >I have 2 pc's running vista Home premium. As of the morning of 5/7/08, both
    > > of them are having an issue after bootup where cpu usage is near 100% for
    > > about 20-30 minutes. The computers are completely un-usable in this state.
    > > Looking at resource monitor(which takes about 10 minutes to load), both
    > > are
    > > showing svchost (netsvcs) PID 1456 at 100%. After this initial 20 to 30
    > > minute lock up session, both computers seem to work fine. After
    > > investigating
    > > the issue a bit, it has something to do with windows update. If I go to
    > > control panel windows update, and try to update, the same thing happens.
    > >
    > > Not sure if this means anything but both computers have update KB940510
    > > under the windows update control panel console, dated 5/7/2008. From
    > > researchign this update it is something to do with windows validation.
    > > Both
    > > PC's have OEM installs of vista, so I dont 'think' the validation is the
    > > issue.
    > > I know this isnt a hardware issue as one of the pc's is a HP laptop, the
    > > other is a Dell xps desktop.
    > > Both computers have had 0 issues before the morning of the 7th, and both
    > > have AV software and have had no signs of a virus.
    > > I have not installed anything on either of the computers lately. Neither
    > > share much of the same software beside antiviurs. (CA AV 2008)
    > > My xp and windows 2000 machines are working fine.
    > >
    > > Any help would be much appreciated. Currently, disabling windows update
    > > seems to solve the issue but this is not a long term solution, IMO.
    > >
    > > Thanks

    >
    > Could be an update?
    >
    > Me, I turn off automatic update and let everyone else test it first.
    >
    > Which you could do. Disable auto update, then remove any recent patches
    > applied and see if they return to normal. And when patches are applied or
    > removed, I always reboot even if it isn't needed.
    >
    >
    >


  8. #8
    Gordon Bell Guest

    RE: Vista 100% cpu usage after bootup / windows update

    I've been experiencing 100% CPU usage on Vista for the past week, making my
    system almost unusable. I installed SP1 a few weeks ago.

    It's the "System & NT Kernel" process.

    I dont' have CA, but I uninstalled Kasperksy Internet Suite 7.0 which made
    the problem go away temporarily. Now, I'm experiencing it again with no
    Anti-Virus installed. Any ideas?


    "Robert" wrote:

    > I have 2 pc's running vista Home premium. As of the morning of 5/7/08, both
    > of them are having an issue after bootup where cpu usage is near 100% for
    > about 20-30 minutes. The computers are completely un-usable in this state.
    > Looking at resource monitor(which takes about 10 minutes to load), both are
    > showing svchost (netsvcs) PID 1456 at 100%. After this initial 20 to 30
    > minute lock up session, both computers seem to work fine. After investigating
    > the issue a bit, it has something to do with windows update. If I go to
    > control panel windows update, and try to update, the same thing happens.
    >
    > Not sure if this means anything but both computers have update KB940510
    > under the windows update control panel console, dated 5/7/2008. From
    > researchign this update it is something to do with windows validation. Both
    > PC's have OEM installs of vista, so I dont 'think' the validation is the
    > issue.
    > I know this isnt a hardware issue as one of the pc's is a HP laptop, the
    > other is a Dell xps desktop.
    > Both computers have had 0 issues before the morning of the 7th, and both
    > have AV software and have had no signs of a virus.
    > I have not installed anything on either of the computers lately. Neither
    > share much of the same software beside antiviurs. (CA AV 2008)
    > My xp and windows 2000 machines are working fine.
    >
    > Any help would be much appreciated. Currently, disabling windows update
    > seems to solve the issue but this is not a long term solution, IMO.
    >
    > Thanks



  9. #9
    denacho Guest

    Re: Vista 100% cpu usage after bootup / windows update


    hi! nice to see someone else has had this same issue and recently. we
    noticed it on our Vista Home Premium pc this past weekend. it's a Dell
    that we've had for i guess just over a year. very slow after boot and
    the CPU is pegged at 100% as well. when i bring up Task Manager i don't
    really see any process that sticks out. of course they fluctuate during
    this pegged time. but i think i've seen some of the same things you
    guys are reporting. in addition to that, and probably due to the high
    CPU, we can't get on the internet (IE or Firefox). that's actually how
    we noticed it. i can boot to Safe Mode with Networking and it's fine.
    we can get to the internet. i went into msconfig and looked at the
    Services and Processes that were "stopped" and tried to determine if
    there was some 3rd party app that was causing the slow down in normal
    boot but it doesn't seem like it. i'm using McAfee Virus Scan (because
    that's what came with the pc) but i need to renew my trial subscription.
    at first i thought maybe that had something to do with it but i
    disabled McAfee and it still pegs in normal boot. i'll try the
    suggestion for disabling WU but i do believe i have that set to not
    install and notify me so i can determine if i want to apply them. i'll
    keep checking back here in the meantime. please keep posting anything
    new you find.


    --
    denacho
    Posted via http://www.vistaheads.com


  10. #10
    Mike Hall - MVP Guest

    Re: Vista 100% cpu usage after bootup / windows update

    "denacho" <denacho.3cc2gc@no-mx.forums.vistaheads.com> wrote in message
    news:denacho.3cc2gc@no-mx.forums.vistaheads.com...
    >
    > hi! nice to see someone else has had this same issue and recently. we
    > noticed it on our Vista Home Premium pc this past weekend. it's a Dell
    > that we've had for i guess just over a year. very slow after boot and
    > the CPU is pegged at 100% as well. when i bring up Task Manager i don't
    > really see any process that sticks out. of course they fluctuate during
    > this pegged time. but i think i've seen some of the same things you
    > guys are reporting. in addition to that, and probably due to the high
    > CPU, we can't get on the internet (IE or Firefox). that's actually how
    > we noticed it. i can boot to Safe Mode with Networking and it's fine.
    > we can get to the internet. i went into msconfig and looked at the
    > Services and Processes that were "stopped" and tried to determine if
    > there was some 3rd party app that was causing the slow down in normal
    > boot but it doesn't seem like it. i'm using McAfee Virus Scan (because
    > that's what came with the pc) but i need to renew my trial subscription.
    > at first i thought maybe that had something to do with it but i
    > disabled McAfee and it still pegs in normal boot. i'll try the
    > suggestion for disabling WU but i do believe i have that set to not
    > install and notify me so i can determine if i want to apply them. i'll
    > keep checking back here in the meantime. please keep posting anything
    > new you find.
    >
    >
    > --
    > denacho
    > Posted via http://www.vistaheads.com
    >



    Your computer is probably full of infections and corrupted files.

    You may want to take the time to back up all of your important files before
    it gets to the point where the computer will not even boot.

    When the McAfee trial expired, so did any updates from McAfee, and you have
    been running with limited anti-virus protection..

    There is some very good info on how to remove spyware etc on this web site..

    http://www.elephantboycomputers.com/

    If some of it is beyond your capability, get local help from a a decent
    computer technician (not the big stores) or back up your important stuff and
    use the manufacturers 'return to factory state' option.

    After doing this, download and run the free version of Avast anti-virus..


    --
    Mike Hall - MVP
    How to construct a good post..
    http://dts-l.com/goodpost.htm
    How to use the Microsoft Product Support Newsgroups..
    http://support.microsoft.com/default...help&style=toc
    Mike's Window - My Blog..
    http://msmvps.com/blogs/mikehall/default.aspx





  11. #11
    Join Date
    Oct 2008
    Posts
    1

    Re: Vista 100% cpu usage after bootup / windows update

    Alright well I have the same problem. I gone through all of my services and startup items on my task manager, and have disabled one at a time, and restarted to trouble shoot every little thing... I resorted to formating my C: and doing a clean reinstall of Windows VIsta... I originally thought this was a third party software compatibility issues...but soon found out it wasn't.... THIS IS A PROBLEM WITH WINDOWS VISTA UPDATES!!!!!!!!!!!! Everyone on this forum giving you advice and saying this is something other than a windows vista update problem.... IS ABSOLUTELY WRONG!!!!

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