Explorer.exe taking up 15-30% CPU usage when moving mou

swarfega said:

build 7500? Wasnt aware of such a build.

Sorry it's 7600

Barman58 said:

Looking at your specs - are you using the Logitec drivers for the mouse? - if so you may want to disable these (uninstall) and try running with just the default Microsoft drivers.
It may be an incompatibility between the current drivers and windows 7.

I have seen this with other Logitec product drivers during the Windows 7 Development.

I never used those drivers :) I just plug in the nano receiver of my mouse in Win7 and do nothing with the drivers.

Barman58 said:

Next step would be, if possible, to try a different mouse, Wired USB or PS2 to eliminate the hardware.

Other than that If you use process monitor, set a trace going filtered to explorer processes, give a second or two to let the system settle, then move the mouse to raise the CPU activity then stop the trace and see what processes are called within explorer. once you know what processes are actually causing the issue a google of each process should identify the problem

Tried using a separate mouse, same result. Take note, this problem was not occuring when I was on Vista x64.

Also, as I've mentioned in my above posts even WITHOUT moving the mouse pointer, the explorer.exe CPU usage still goes up after 30 seconds and comes back to 0-1% again after 2 seconds.

About the process monitor steps you mentioned, how do you exactly do that? Sorry, I'm not familiar with using process monitor and similar programs.

Barman58 said:

What process monitor is basically is a recorder for task manager.

It produces a stream of data organised by time, showing each change in the system changes which are often missed while watching live.

The detailed page here ...

Process Monitor

gives much better information, and presented much better, than I can

The right hand panel links to examples of using the tool

I've used the tool for many years and have only scratched the surface, It's not a solution to a problem in itself but can enable you to see what is really happening.

I clicked the link but I don't seem to find the examples in the right hand panel you were talking about

I also want to know which specific process is causing this.

I was already able to trace explorer.exe and all processes I get have a PID of 1380.

I really don't understand the output, here's the logfile:

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Please help me