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high cpu usage - unknown cause
Hi,
I get regularly high CPU usage without any visible reason in task manager. A desktop gadget shows the CPU usage between 50 - 70 % but in the task manager there are two or three processes with 1 % each.
I see also higher power consumption. In normal idle state I have some 18 W, with the CPU usage increased it is 40 W. And of course, the notebook is pretty noisy at that time because the CPU temperature runs to 50 °C. (Usual is 15 - 20 °C.)
The notebook is HP ProBook 6540b - Intel i5, Win 7 Pro. It is new and I am quite disappointed I cannot take it to a library because of the noise.
Because I see nothing in the task manager I am not able to determine the cause of the problem.
If anybody has any ideas what to do, I would be very glad. Thx.