I have a problem with one of the device drivers - it constantly uses resources in a very strange way - one second nothing, the other one full 100%. It creates a saw-tooth pattern in the resource monitor:
It is quite a problem, because the machine is a notebook and this processor usage decreases battery life. The last time the problem went away by reinstalling Windows, but now it is back and I am not sure what caused the problem. I don't recall installing any new drivers lately, but that doesn't mean I didn't.
Maybe it is not a driver, but definetly something running under System (PID 4), such as antivirus, indexer, or something else. How can I display what is actually causing this behaviour within the System process?
I am Win7 64