Windows 8 and 8.1 Forums

"System" process = 100% disk usage

  1. #1

    Posts : 6
    Windows 8 Pro x64

    "System" process = 100% disk usage

    I have a laptop running Windows 8 Pro x64, and lately I'm facing an issue where the System process (PID = 4) has spikes of 100% of disk usage according to task manager. I can't watch a video or play a song on a media player properly, for example (there's a crackling noise and the playback is slow), because this process (System) keeps using 99-100% of my hard drive.

    Even if I have just booted up and running only the essential OS process and services and completely idle, task manager keeps reporting several spikes of 100% of disk usage. Tried uninstalling antivirus (avast free), but that didn't help. I really have no clue what do to prevent this process from writing/reading so much into HD and reaching 100% of disk usage. Can anyone suggest me a procedure to solve this issue? Thanks in advance.


    OS: Windows 8 Pro x64
    CPU: core i3-2350M @ 2.3 GHz
    RAM: 4 GB DDR3 @ 1333 MHz
    HD: Samsung Spinpoint ST500LM012 HN-M500MBB 5400 RPM

      My System SpecsSystem Spec

  2. #2

    Posts : 1,950
    windows 8.1 Update 1 Pro 64bit

    Avast can do some weird things to computers even when uninstalling using the conventional methods. When you uninstalled it did you use their removal tool that you can get from their web site and run it in safe mode.
      My System SpecsSystem Spec

  3. #3

    Posts : 6
    Windows 8 Pro x64

    Thanks for the answer, but I have just reverted back to Windows 7 x64, and the issue is solved now lol!
      My System SpecsSystem Spec

  4. #4

    Posts : 11
    Windows 8.1

    I had the same problem which occurred immediately after upgrading from 8 to 8.1. I spent a lot of time following suggestions but what rescued me was coming across a post, which at first I thought was a company promotion, saying that CCLEANER would solve the problem with their registry clean-up tool. And it's free. I downloaded the software and ran the registry cleaner three times (rebooting each time) and problem solved. My disk usage is running along at 5-10% and no more time wasted. I was just about to the point of buying a new computer but have to thank this company for saving me the time and money. QUICK, EASY & FREE
      My System SpecsSystem Spec

"System" process = 100% disk usage
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