The Dreaded 100% CPU Usage Message

If there is one thing no PC user wants to see it is that their CPU usage is at 100%. When this occurs it signifies that there are major troubles ahead and it is an issue that needs to be addressed right away.


100% CPU Usage Symptoms


If your PC is letting you know that your CPU usage is at 100% you will likely know it. Because this means that all of your available memory is being used, your PC will slow dramatically. In some cases, if not attended to in a timely manner, this problem can lead to far worse consequences such as frequent freezes and/or crashes.


100% CPU Usage Causes

There are many factors that can attribute to your 100% CPU Usage troubles. In some cases it may be that your PC has very little, or even cheap, memory. However, it is more commonly a problem with the PC itself such as malware running in the background without you knowing or a registry that is disorganized and/or corrupted.


Fixing 100% CPU Usage

When you see that you are at 100% CPU Usage the first thing to do is to check your memory. If you find that the memory your PC contains is sufficient then you likely have malware issues that need to be attended to.



  1. Start your PC in Safe Mode by pressing the F8 key during startup.
  2. Find the anti-malware software icon located on your tool tray or on your desktop and double-click to open it.
  3. Scan the entire PC instead of just doing a quick scan.
  4. Delete any and all malware or other adware programs that are found.

Restart your computer for changes to take place.

See Also

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