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

8n20_C#
Thu May 08 10:36:13 PDT 2008

"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!

Canuck57
Thu May 08 10:48:55 PDT 2008


"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.

Robert
Thu May 08 11:28:01 PDT 2008



"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.

Rich
Fri May 09 10:10:05 PDT 2008

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.

TechieBird
Wed May 14 02:39:37 PDT 2008


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

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

So I googled for *"CA Antivirus" 100% CPU*, and found this thread
http://tinyurl.com/4fk4v

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

--
TechieBir
Posted via http://www.vistaheads.co

Ben
Fri May 16 15:36:01 PDT 2008

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.
>
>
>

Gordon
Thu May 29 08:03:00 PDT 2008

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