This application, ntoskrnl.exe, is slowing down my computer. I've noticed some sluggish performance from my laptop, and when I decided to pay a visit to task manager, I found that ntoskrnl.exe, or system (as it's referred to) is literally taking up about 50% to 90% of my disk column. I don't know for sure if this is the reason that my computer is so sluggish, but that huge percentage makes me extremely suspicious. It would be greatly appreciated if someone can provide a solution as to why this is, and how to reduce it (if it'll make a difference). If you need my laptop's hardware/software details, don't be shy to ask.

EDIT: I have windows 8.1, sorry for not mentioning that

• Edited by 100bitsandpixels Tuesday, March 17, 2015 4:47 AM

This is advance way to find the culprit

http://social.technet.microsoft.com/wiki/contents/articles/4847.install-the-windows-performance-toolkit-wpt.aspx

What I suggest is try to isolate software issue, if you have any software related to network like download software like torrent, antivirus, try to disable it or uninstalled it. maybe this issue comes from that software

You can perform clean boot to check or monitor from safe mode whether this issue also persist at safemode

http://support.microsoft.com/en-us/kb/929135

If you haven't update your network driver, please do 

• Edited by britishdhez 21 hours 57 minutes ago
• Proposed as answer by MeipoXuMicrosoft contingent staff, Moderator 36 minutes ago

In order to diagnose your problem we need to run Windows performance toolkit the instructions for which can be found in this wiki If you have any questions feel free to ask
Please run the trace when you are experiencing the problem

This is advance way to find the culprit

http://social.technet.microsoft.com/wiki/contents/articles/4847.install-the-windows-performance-toolkit-wpt.aspx

What I suggest is try to isolate software issue, if you have any software related to network like download software like torrent, antivirus, try to disable it or uninstalled it. maybe this issue comes from that software

You can perform clean boot to check or monitor from safe mode whether this issue also persist at safemode

http://support.microsoft.com/en-us/kb/929135

If you haven't update your network driver, please do 

• Edited by britishdhez Tuesday, March 17, 2015 9:21 AM
• Proposed as answer by MeipoXuMicrosoft contingent staff, Moderator Wednesday, March 18, 2015 6:42 AM

Hi 100bitsandpixels,

Please run the Windows performance toolkit as britishdhez and ZigZag suggested and upload the file to the OneDrive ,paste the link here .

We will make a deep analysis for you .

Best r