very high CPU usage

N

NL

Hi all

Sometimes when I first turn on and log on to my PC, the
arrow in my mouse shows timesand (like it is processing
something).

When I look at the task manager, the performance tab
suggested that the CPU usage is 50-60%, while I do not
seem to run anything.

The question is:
- how can i tell what cause such a large CPU usage?

Thanks in advance.
 

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