CPU usage

[Stefan Koschke]

Hi, since a few days my cpu has always cpu load of about 90 % at core 2.
Vista is very slow.

Taskmanager shows no applications with cpu usage.

Now i installed process explorer and i can see that 45% cpu usage (this
is 90% of core 2) is for "System / hardware interrupts".
Which interrupts are the problem, what can i do to fix this?

Regards
Stefan

 

[Synapse Syndrome]

Hi, since a few days my cpu has always cpu load of about 90 % at core 2.
Vista is very slow.

Taskmanager shows no applications with cpu usage.

Now i installed process explorer and i can see that 45% cpu usage (this is
90% of core 2) is for "System / hardware interrupts".
Which interrupts are the problem, what can i do to fix this?

That very much sounds like a rootkit.

Try this:

http://technet.microsoft.com/en-us/sysinternals/bb897445.aspx

ss.

 

[Kerry Brown]

I've seen bad hardware or drivers cause those symptoms. Have you added any
new hardware or updated any drivers? You may get some clues if it's a driver
in this log.

Event Viewer
Applications and Services Logs
Microsoft
Windows
Diagnostics-Performance
Operational

 

[Colon Terminus]

Hi, since a few days my cpu has always cpu load of about 90 % at core 2.
Vista is very slow.

Taskmanager shows no applications with cpu usage.

Now i installed process explorer and i can see that 45% cpu usage (this is
90% of core 2) is for "System / hardware interrupts".
Which interrupts are the problem, what can i do to fix this?

Regards
Stefan

Run the Manufacturers diagnostic program on your hard disk.

Go to the website of the manufacturer of your hard disk.
Download their Diagnostic Program.
Run it.

 

[Stefan Koschke]

Run the Manufacturers diagnostic program on your hard disk.

Go to the website of the manufacturer of your hard disk.
Download their Diagnostic Program.
Run it.

Hi,

thanks, but Samsung tool tells both drives have no errors :-(

Now i have to look at other points...

Ciao
Stefan

 

[Stefan Koschke]

That very much sounds like a rootkit.

Try this:

http://technet.microsoft.com/en-us/sysinternals/bb897445.aspx

Hi,

this tool does not run under Vista?!

Stefan