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

Solution 1:

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.