CPU Usage never below 20%

[Guest]

I am completely bewildered. With the Task Manager up, I see 99% for system
idle but the cpu usage never drops below 20%. I used msconfig and turned off
everything I could find. It is not connected to the outside world but is a
stand alone machine. It has been connected to the Internet and always ran NAV
and Norton Internet Security. As far as I can tell it doesn't have a virus.
So I have 20% usage with no applications and the bare minimum processes. And
the processes listed do not add up to the 20% usage. How do I find out what
else is running when not listed in the task manager screen?

 

[Rock]

I am completely bewildered. With the Task Manager up, I see 99% for system
idle but the cpu usage never drops below 20%. I used msconfig and turned
off
everything I could find. It is not connected to the outside world but is a
stand alone machine. It has been connected to the Internet and always ran
NAV
and Norton Internet Security. As far as I can tell it doesn't have a
virus.
So I have 20% usage with no applications and the bare minimum processes.
And
the processes listed do not add up to the 20% usage. How do I find out
what
else is running when not listed in the task manager screen?

Download and run process explorer. See if that gives you more info.
http://www.microsoft.com/technet/sysinternals/utilities/ProcessExplorer.mspx

 

[Rock]

I am completely bewildered. With the Task Manager up, I see 99% for system
idle but the cpu usage never drops below 20%. I used msconfig and turned
off
everything I could find. It is not connected to the outside world but is a
stand alone machine. It has been connected to the Internet and always ran
NAV
and Norton Internet Security. As far as I can tell it doesn't have a
virus.
So I have 20% usage with no applications and the bare minimum processes.
And
the processes listed do not add up to the 20% usage. How do I find out
what
else is running when not listed in the task manager screen?

Additionally, it could be due to DPC's (Deferred Procedure Calls) and/or
Interrupts. These are not processes but the CPU time spent on them is
displayed in process explorer, but it doesn't show up in Task Manager.

 

[mikeyhsd]

the Task Manager itself uses a considerable amount of CPU. mine averages 6-10%.
click on the CPU column heading to organize the list according to CPU usage and see what it shows.



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I am completely bewildered. With the Task Manager up, I see 99% for system
idle but the cpu usage never drops below 20%. I used msconfig and turned off
everything I could find. It is not connected to the outside world but is a
stand alone machine. It has been connected to the Internet and always ran NAV
and Norton Internet Security. As far as I can tell it doesn't have a virus.
So I have 20% usage with no applications and the bare minimum processes. And
the processes listed do not add up to the 20% usage. How do I find out what
else is running when not listed in the task manager screen?