Windows – CPU usage over 100% (Resource Monitor says 61325297%) after upgrading to Windows 10

cpucpu usagewindowswindows 10windows-10-upgrade

Some time ago I posted this question about a problem I found in my PC since I updated my Windows 7 to Windows 10 Pro x64, namely that my Task Manager was constantly showing 100% usage of my CPU even though I really wasn't using that much in my process + services.

Now I was looking back at that problem and decided to open the Windows program where we can see CPU usage in greater detail and what I found out was that that program was telling me the CPU usage is over 100%! (while my processes definitivaly weren't using not even 10%!)

Here is the print:

Weird bug

Now that clearly is a bug. How can I solve it? I'll try to find a new drive for my Intel Processor in the middle time but I really don't imagine an old drive could be the issue behind this.

Note: despite the title edit, it's interesting to mention that the value shown in Resource Monitor isn't fixed: it keeps changing (tremendously) each second in a way it seems that is printing random values.

Best Answer

That's exactly what happened to my computer. The blue circle next to the cursor kept on spinning while I was not doing anything. Then, eventually, I found many (several hundred and more) Java(TM) Web Start Launcher processes running according to Task Manager. Even though they took 0-1% CPU time each, they caused CPU and memory usage to reach 100%. Those processes are not listed at the top if you do sorting in Task Manager by CPU (but are easily noticeable since there a few hundred and more).

If this is your case, the following may help you as it did me:

  1. Windows Key + R
  2. Type msconfig and run it.
  3. Go to the Service tab
  4. Check Hide all Microsoft Services
  5. Click Disable all
  6. Go to the Startup tab
  7. Disable all items

  8. Optionally, in an administrative command prompt, run the following;

    Dism /online /cleanup-image /restorehealth

  9. Reboot

After this work, my computer has been running fine for last two days. Then I went back to the msconfig and I turned on the services I really need such as OneDrive and Dropbox stuff.

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