Windows 10: CPU usage 100% without any good reason

I have Windows 10 version 1909 (OS Build 18363.1198). For the last few days, my system freezes badly. CPU usage goes up to 100% without any reason. In the following screenshot, I just had Adobe Illustrator open with no files!! However, I wasn't facing any freeze when I took this screenshot. How can I exactly pinpoint to the unnecessary processes that are eating up my CPU and raising up the temperature without any good reason?





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cpu usage at 100%

CPU usage at 100% from start up for no apparently good reason. Service Host appears to be the problem but I cant narrow it down more than that at present.

Any suggestions?

I am using Windows 10 full release version 64 bit.

 

100% CPU usage for no reason

Hello everyone! So i've been experiencing quite high CPU usage (100% non stop) for no reason, i've checked my hardware/software but nothing seems to cause any issues. My PC is always using it's full CPU power even if it is task manager. I have used an antivirus (bitdefender) but it showed me nothing. Please help.

 

100% CPU Usage NO REASON AT ALL

Hello,

To fix high CPU usage issue, please refer these steps:

Try to identify the process creating this issue.

Download Process Explorer from Microsoft:

Process Explorer - Windows Sysinternals

Run the tool then select the system process, right-click and select Properties.

Switch to the Threads tab. This will show which file is using the excessive CPU usage, from which you can then attempt to diagnose it.

Also refer: [FIX] Windows 10 High CPU Usage Problem

Let us know if this helps!

Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.