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Computer intermittently slow, sfc /scannow reports errors.

  1. #1


    Posts : 3
    Windows 8.1

    Computer intermittently slow, sfc /scannow reports errors.


    Hi there

    I have an HP notebook that has been getting slower and slower in recent weeks. At first I thought it was because of the hugely oversized .PST files, and after archiving and compacting there has been some improvement, but that's not the end of the story. The machine still slows right down to a complete stop at intervals (from seconds to minutes) aftewhich it just picks up and takes of again as if nothing had gone wrong. These hesitations can also be from seconds to minutes (although usually it's less than 30 seconds).

    I ran sfc /scannow which reported
    Windows Resource Protection found corrupt files but was unable to fix some
    of them. Details are included in the CBS.Log windir\Logs\CBS\CBS.log. For
    example C:\Windows\Logs\CBS\CBS.log. Note that logging is currently not
    supported in offline servicing scenarios.
    I have looked at the log file mentioned but there are so many lines with incomprehensible information in them I thought someone here is bound to have a much better idea than I do as to "what now".

    Any pointers appreciated, thanks!

    P.S. I ran Seagate's Seatools disk diagnostics and it reports the disk is 100% OK after the long self-test
    Computer intermittently slow, sfc /scannow reports errors. Attached Files

      My System SpecsSystem Spec

  2. #2


    Try running this sequence of commands from a Elevated Command Prompt:

    Dism /Online /Cleanup-Image /StartComponentCleanup
    Dism /Online /Cleanup-Image /RestoreHealth
    SFC /scannow

    Run sfc /scannow up to 3 times.
      My System SpecsSystem Spec

  3. #3


    Cross Plains
    Posts : 255
    Windows 10 Pro


    On top of what Ztruker said, you may want to try defragmentation if it is a standard HDD or trim if it is a SSD.


    Sent from my iPhone using Tapatalk
      My System SpecsSystem Spec

  4. #4


    Don’t know how to resolve computer is running slow issue? Technicians who are expert in this field can provide you with great help to make sure that your computer run at good speed and you can work without any hassle.
      My System SpecsSystem Spec

  5. #5


    Posts : 3
    Windows 8.1


    Thanks Ztruker and ArazelEternal - appreciate the input

    In fact after posting the above I ran defrag - three times - and reduced fragmentation from 40 GB to nil, and the performance is several thousand times better

    But I still want to go through those file repair procedures because it bothers me to know there are errors. User can't release the PC to me for a day or so, but I'll report back once completed. Thanks again.
    Last edited by ChrisBedford; 24 May 2016 at 12:40. Reason: typo
      My System SpecsSystem Spec

  6. #6


    Cross Plains
    Posts : 255
    Windows 10 Pro


    Glad to help, even though you did what I suggested before I suggested it. Computer intermittently slow, sfc /scannow reports errors.


    Sent from my iPhone using Tapatalk
      My System SpecsSystem Spec

Computer intermittently slow, sfc /scannow reports errors.
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