70% CPU usage by "NT Kernel and System" in Windows 8 Developer Preview


  • I've recently installed Windows 8 Developer Preview on my Desktop PC and I hear a lot of fan noise. I opened the Task Manager and found out that NT Kernel and System is using about 70% of the CPU. What should I do? What is NT Kernel and System?



    Monday, September 19, 2011 2:55 PM

All replies

  • It would be helpful if you post what hardware do you have in your desktop PC - processor, motherboard, amount of RAM, ...
    Monday, September 19, 2011 3:04 PM
  • Intel Pentium 4 CPU 3.4GHz

    2 GB RAM

    Gigabyte Motherboard GA-945-PL-S3



    Monday, September 19, 2011 3:14 PM
  • run a xperf trace:


    But use the WPT version from the new WDK from the MSDN Downloader page.

    "A programmer is just a tool which converts caffeine into code"

    Monday, September 19, 2011 4:58 PM