System Idle Process using 90% of CPU
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Thread: System Idle Process using 90% of CPU

  1. #1
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    System Idle Process using 90% of CPU

    Frequently my XP desktop is barely responsive (example: I can’t mark Yahoo email messages for deletion). When I check Task Manager, I see only one process active, Sytsem Idle Process, using between 80 to 99% of my CPU.

    What is causing that? How can I reduce that usage? Thanks.

  2. #2
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    Have you run Antivirus and Malware scans?
    Biostar TA790GX A2+ 6.0
    AMD Phenom X4 9750 CPU.
    4 Gig DDR2 Memory.
    ATI HD 5450 PCIe Video
    ATI HD 5450 PCIe Video
    500 Watt P.S.
    LG W2241T Widescreen 22" LCD
    ViewSonic VA721 17" LCD
    Envision 17" LCD
    2 LG DVD Drives
    Floppy Disk Drive
    Maxtor 120 Gig Windows 7 Home Premium 32 bit
    Gateway NV5378-U Windows 7 Home Premium 64 bit
    Acer Aspire V3-731 Windows 7 Home Premium 64 bit

  3. #3
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    Sytsem Idle Process, using between 80 to 99% of your CPU is absolutely normal, not so being unable to mark Yahoo email messages for deletion.
    Last edited by Ricardo Dávidow; June 15th, 2013 at 07:46 PM.

  4. #4
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    I agree with Ricardo. When you see "System Idle Process > CPU" at say "99%", that means everything currently running on your computer is only using 1% of your CPU.

  5. #5
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    Thanks all. my AVG showed I am clean. But MalwareBytes showed some 50 infections. Cleaned out the 50.But system continues to run very slowly, even slower than before.

    Suggestions?

  6. #6
    photolady's Avatar
    photolady is offline Lifetime Friend of Site Staff
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    I suggest you need to follow the instructions from the link below:

    http://discussions.virtualdr.com/sho...ted-4-28-2013)

    It' possible you're still infected and malwarebytes though good doesn't find and fix everything.

  7. #7
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    I'm baffled about this new development, almost hesitant to report it. Maybe it will make sense to you.

    My pc continued to be: 1) fully responsive in WORD 2003; but 2) almost completely unresponsive in working the internet. But, -- all of a sudden, without me doing anything -- after 36 hours just sitting there, it is now fully responsive in working email and the internet. Whatever might be going on?.

  8. #8
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    Your guess is as good as anyones

    I wouldn't worry about it unless it happens again.
    If you're happy and you know it......it's your meds.

  9. #9
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