Windows 8 and 8.1 Forums

Disc goes to 100% busy for extended periods.

  1. #1

    Posts : 3
    Windows 8.1

    Disc goes to 100% busy for extended periods.

    First, apologies if this is the wrong place to post or if this has been discussed before.

    I'm running 8.1 on a laptop with 8gb memory. I have a 120gb SSD as c: and a 1tb disc as d:

    About a week ago there were some windows updates installed. Shortly after my d: started going 100% busy for extended periods (up to half an hour) as shown on task manager and the system slows considerably. Strangely, during this period task manager also shows zero read speed and zero write speed, as if there is no actual activity.

    This happens (but isn't limited to) after reboots. I've tried stopping various processes (virus checker, dropbox etc) but this makes no difference. My c: SSD operates perfectly.

    Thanks in anticipation.

      My System SpecsSystem Spec

  2. #2

    Posts : 3
    Windows 8.1

    An update.

    I've been looking around forums (including this one) and came across the suggestion of disabling the Sensor Monitoring Service (SensrSvc). I tried this this morning (use msconfig and reboot) and so far there has been no repetition of the problem.

    Fingers crossed.

    Update: False hopes. It started again about 30 minutes ago.
    Last edited by Mosaix; 21 May 2015 at 05:54.
      My System SpecsSystem Spec

  3. #3

    Posts : 103
    Microsoft Windows 8.1 64 Bit

    Have you tried using performance monitor to pinpoint the applications using the disk?
      My System SpecsSystem Spec

  4. #4

    Posts : 3
    Windows 8.1

    Thanks for your suggestion. Performance monitor shows the system about 97% idle whilst the disc is busy. Many, many other processes are utilising the other 3%. Note that this is whilst there are no applications loaded. I've stopped everything I can think that could be using the disc.

    I've not had the system long and there's practically nothing on this disk so I suspect that it must either be the operating system or a faulty driver, especially as the problem only started after a windows update.
      My System SpecsSystem Spec

Disc goes to 100% busy for extended periods.
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