Why do I have 40% of CPU use with no reason?

Arev Yuma

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Jul 27, 2015
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Hi,
I realized my battery was drained quite fast since I updated to 10240 build of W10 TP. I checked the task manager, and there were two tasks using 10% of CPU each one.

One is called "Windows Driver Foundation" and the other one, "Service host: local system", is like a bunch of little tasks.

When I restart the Surface it disappears but gets back after a while, and persists even if I close all the programs... anyone has an idea about how to fix it? Or is it actually normal?

Thanks everyone for reading :)
 

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