Your thought process and concerns mirror mine. Now my CPU usage is running about 1% at idle. FYI, I just purchased another PC (built by Puget Systems) running Win 10 and its CPU usage at idle is...

It took me two download attempts to get the entire 2.87 GIGABYTE file to download. After it did download, it installed without any issues but the one, high CPU usage -- the subject of this thread. ...

Here is the article: Windows 10 High CPU Usage Fixes - Softpedia
The first method described worked -- perfectly and immediately. No coincidence.

Well now... I found the following in a Softpedia post and gave it a try. Guess what?! It worked perfectly. My CPU usage went from a constant 30 to a constant TWO (2). My CPU temp went from 50+...

Fascinating. I will let this puppy run for a few days and monitor the CPU usage and CPU temperatures. There seems to be a direct correlation. I would think that as I downloaded from the Microsoft...

GREAT! I'll let her run....

How long will this take?

The specific service that is using 25% of the CPU is the Windows update services "wuauser". It is part of the svchost.exe. I hope you can zoom in and see what's going on. Thanks for your comments....

Yesterday, I upgraded from Win 7 pro x64 to Win 10 pro x64. I have a "clean machine" without any traces of viruses or malware. My Win 7 PC ran flawlessly.

My Win 7 PC used little or no CPU...