Thanks for the link. I find the article suggestive .-) I will try to catch the service that makes the svchost use more cpu time. I can also shut up some unneeded services.
Yet, it is just a half of the problem. The second halt is "WmiPrvSE.exe". Can this process be stopped?
one moment, it is back right now...
So, the services run on the svchost are: Power, Plug and Play and DCOM Launch. See pictures below.
And it is away. It lasted app. 5 minutes, this time.
I watched the processes in the System Explorer but I did not find the way how to stop the two services responsible for my troubles. Then, I searched in system logs (events protocols) accesible through the Action Center, I selected events occured at the time the high cpu usage appeared and, finally, found some minor problems with two Hewlett Packard utilities which are normally loaded as services at startup - HP Power Assistent and HP Wireless Assistent. So I shut them down and excluded from startup launch and... the problem never appeared again. I did some experiments to confirm this hypothesis, and it was not but hypothesis because the only link between what I have seen in the task manager and what i have found in the log was that the both somehow concern network connection, and now it is for sure.
So, the problem was HP software which, moreover, does not bring any significant improvement to basic win tools to manage wifi and power consumption. Now, the cpu is calm 20 °C and silent!
... btw. have ever noticed how noisy a harddisk can be?
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