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Why Ntoskrnl.exe Causes High CPU and How To Fix It

Why Ntoskrnl.exe Causes High CPU and How To Fix It

Are you finding the solution to the high CPU usage problem of Ntoskrnl.exe? If yes, you are lucky to read this article, buddy! Today I am going to take you on a tour of Ntoskrnl.exe and all the related problems and solutions, causes, and reasons.

Ntoskrnl.exe is a memory handler in Windows 10 Operating system that manages memory operations so well. Ntoskrnl means windows NT Operating System Kernel. It, is basically a Kernel Image, are a system application file that gives the kernel and executive layers of the Windows NT kernel space. Ntoskrnl.exe is a fundamental part of the system and is capable of various system services such as hardware virtualization, process, and memory management. It is a protected file system and hence can not be corrupted or deleted.

Why Ntoskrnl.exe Causes High CPU(consume all Memory Space)?

There could be several reasons for high memory consumption. I am going to discuss them here.

Cause 1: New Compressed Memory

The New Compressed memory concept has introduced in Windows 10. This means rather than writing unused pages on the disk, the memory managers compress them in primary memory only to save time.

Microsoft has said that:

In Windows 10, we have added a new concept in the Memory Manager called a compression store, which is an in-memory collection of compressed pages. This means that when Memory Manager feels memory pressure, it will compress unused pages instead of writing them to disk. This reduces the amount of memory used per process, allowing Windows 10 to maintain more applications in physical memory at a time. This also helps provide better responsiveness across Windows 10. The compression store lives in the System process’s working set. Since the system process holds the store in memory, its working set grows larger exactly when memory is being made available for other processes. This is visible in Task Manager and the reason the System process appears to be consuming more memory than previous releases.

Cause 2: Bad or Outdated Device Drivers

Communicating to the output devices require drivers. ntoskrnl.exe sends and receives data via the device drivers. The received data is then written into the RAM and awaits execution. If device drivers are corrupted then drivers may continuously send data to ntoskrnl.exe. Also, bad drivers may write data in the memory space occupied by the ntoskrnl.exe file. Thus this calls for more CPU time to handle all this data.

Cause 3: Malware and Viruses

Malware and Viruses are distributed through Free online downloads. These can enter your system without your knowledge and can responsible for memory leaks. It might also alter the registry of the executable. It means that ntoskrnl.exe does not continue to work as expected.

When ntoskrnl detects that there is too much in the memory, it panics and dumps all the files, this results in Blue Screen of Death(BSOD).

Thus there might be an abrupt shutting down of the system.

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How to Fix the issues?

If you start to experience memory leaks all of a sudden, then there might be a possibility of viruses. If a memory leak occurs after a windows update then this can be due to bad drivers. For this, you have the Repair Corrupt System File. To do so, there are many methods. Below are the details.

Method 1: Run Antimalware and Antispyware programs

Install Antimalware and antispyware on your system and scan your system from time to time. This will protect your system from viruses and unexpected memory leaks.

Method 2: Update Drivers

If you do not know the status of your drivers, it’s better to update them. To update drivers, follow the steps below:

  1. Go to search and type device manager.
  2. Open on Device manager.
  3. Check for updates and then “Update”.

Method 3: change Registry Settings

  1. Press the Windows + R keys together.
  2. Then, type in “regedit” and press enter.
  3. Then go to “HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>Control>Session Manager>Memory Management”
  4. Double click on the Clear Page File Shutdown registry in the right pane.
  5. Change the Value Data to 1 and click on OK.
  6. Then Restart your computer.
  7. Hopefully, the problem must have gone!

Method 4: Disable runtime broker

Runtime Broker is one system process that usually uses a large portion of CPU cycles, due to its poor memory optimization. Hence you need to disable it.

  1. Go to Start Menu.
  2. Open the Settings app
  3. Then Open System -> Notification and Actions
  4. Deselect the option “Show me tips about Windows”.
  5. Restart your PC.

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Final Words

Well, friends, this is all about ntoskrnl.exe memory consumption and potential fixes.

I hope you would like to read this information. Share your feedback. Thank you!