Most likely Windows Update (WU) is hogging your PC trying to update it.
To disable WU temporarily, do the following: 1) Enter "services" in the search area (again, without the quotes) 2) When the window opens, scroll down until you see Windows Update 3) If it say Running under status, that indicates that WU is running 4) To change that, double-click on that task, select Stop under the Service status, and then Apply 5) That should stop WU -- and you should see an immediate improvement in performance
If not, then WU is not the problem.
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