Windows 8 and 8.1 Forums


Windows 8 computer suddenly became slow, 100% disk usage

  1. #1


    Posts : 2
    Windows 8

    Windows 8 computer suddenly became slow, 100% disk usage


    My Task Manager:
    Click image for larger version

    HP Pavilion with Intel Core i3 running on Windows 8 and NVIDIA GEFORE GT 630M 1GB

    ---

    My relatively new (about 2 months old) laptop running on Windows 8 suddenly became slow. I noticed it starting yesterday when it became really laggy. Just a few days ago it was working just fine.


    I tried to look for solutions online and was worried that it might be caused by malware. I did a quick scan with Malwarebytes and it found no infections.


    When I boot in safe mode, it seems pretty fine. I tried doing a system restore but I was also informed that it wasn't completely done probably because of an antivirus.


    My antivirus is Norton Internet Security and I've read that Norton can be such a hog so I've tried disabling it though not entirely and it hasn't been uninstalled yet. What worries me is that I haven't experienced this problem even with Norton running until just recently.


    I've also tried running a chkdsk /r because going to Tools > Check for Errors on my C:\ drive said that there were errors that needed repair.


    It has become less laggy but apparently not totally (not to previous state). My task manager however still shows 100% disk usage. Previously Norton would be listed among the top but now it's usually "System" and I don't quite understand why.


    Help very much appreciated! Thanks.

      My System SpecsSystem Spec

  2. #2


    Lynnwood, WA
    Posts : 173
    Windows 8, Windows 7


    It might be Windows trying to index the contents of your hard drive which is worth shutting off to test.

    Open your start menu and type "indexing options" and choose the first entry in the Settings category. Remove everything from the list and restart. Does it have any effect?
      My System SpecsSystem Spec

  3. #3


    Posts : 2
    Windows 8


    Anyways, I decided to do a refresh and it works fine now. I still don't fully understand what happened. Probably it was an installation but I can't be certain. Thanks for the help!
      My System SpecsSystem Spec


  4. #4


    Portsmouth Hants
    Posts : 769
    Windows 8.1 Pro with Media Center


    It will happen periodically. System background maintenance takes over the system for several minutes with a lot of memory, CPU and Disk activity, and normal work becomes difficult during these busy periods - annoying, but they pass, and everything goes back to normal.

    Task manager shows

    Service Host: Local System (7)

    (or something similar) doing most of the usage, and applications are slow to start, or fail to respond for a while.

    I remember XP doing something similar during its early days, then one of the updates fixed it.
      My System SpecsSystem Spec

  5. #5


    Hafnarfjörður IS
    Posts : 4,379
    Linux Centos 7, W8.1, W7, W2K3 Server W10


    Hi there
    With Windows 8 you don't really need any external / 3rd party AV software - these often cause excessive disk usages and often can't be seen in Disk usage monitors.

    I notice you have Symantec -- that usually is enough to raise at least a "Yellow card". -- Try uninstalling ALL A/V software and just rely on the standard built in Windows AV software (Windows defender). It's actually very good.

    If you are a bit worried about doing this just keep disconnected from the Internet at the time you are doing your test.

    Cheers
    jimbo
      My System SpecsSystem Spec

  6. #6


    Lynnwood, WA
    Posts : 173
    Windows 8, Windows 7


    Quote Originally Posted by jimbo45 View Post
    Hi there
    With Windows 8 you don't really need any external / 3rd party AV software - these often cause excessive disk usages and often can't be seen in Disk usage monitors.

    I notice you have Symantec -- that usually is enough to raise at least a "Yellow card". -- Try uninstalling ALL A/V software and just rely on the standard built in Windows AV software (Windows defender). It's actually very good.

    If you are a bit worried about doing this just keep disconnected from the Internet at the time you are doing your test.

    Cheers
    jimbo
    I agree. Windows Defender (formerly Windows Security Essentials if you're still a Windows 7 user) is great and I generally recommend it over any 3rd party A/V.
      My System SpecsSystem Spec

  7. #7


    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

  8. #8


    Posts : 2
    Windows 8.1 Pro


    Quote Originally Posted by jimbo45 View Post
    Hi there
    With Windows 8 you don't really need any external / 3rd party AV software - these often cause excessive disk usages and often can't be seen in Disk usage monitors.

    I notice you have Symantec -- that usually is enough to raise at least a "Yellow card". -- Try uninstalling ALL A/V software and just rely on the standard built in Windows AV software (Windows defender). It's actually very good.

    If you are a bit worried about doing this just keep disconnected from the Internet at the time you are doing your test.

    Cheers
    jimbo
    Quote Originally Posted by JLyman View Post
    Quote Originally Posted by jimbo45 View Post
    Hi there
    With Windows 8 you don't really need any external / 3rd party AV software - these often cause excessive disk usages and often can't be seen in Disk usage monitors.

    I notice you have Symantec -- that usually is enough to raise at least a "Yellow card". -- Try uninstalling ALL A/V software and just rely on the standard built in Windows AV software (Windows defender). It's actually very good.

    If you are a bit worried about doing this just keep disconnected from the Internet at the time you are doing your test.

    Cheers
    jimbo
    I agree. Windows Defender (formerly Windows Security Essentials if you're still a Windows 7 user) is great and I generally recommend it over any 3rd party A/V.
    Please DO NOT use the built in windows Anti-Virus as it literally does not do anything but stop .EXE files from running. It is NOT a real antivirus
      My System SpecsSystem Spec

  9. #9


    Posts : 210
    Windows 8.1 (HOME not Pro) 64bit


    Please DO NOT use the built in windows Anti-Virus as it literally does not do anything but stop .EXE files from running. It is NOT a real antivirus
    you sir are out of your mind.

    are you from Apple?
      My System SpecsSystem Spec

  10. #10


    Posts : 2
    Windows 8.1 Pro


    Quote Originally Posted by bassfacer22 View Post
    Please DO NOT use the built in windows Anti-Virus as it literally does not do anything but stop .EXE files from running. It is NOT a real antivirus
    you sir are out of your mind.

    are you from Apple?
    No I am not from Apple. Most of the total PC users on the planet would agree with me. It has been tested and proven to be terrible. I did a scan with it before. And then I scanned again just to be sure. It didn't pick up anything. I put a REAL antivirus onto it and the real antivirus picks up 6 straight away
      My System SpecsSystem Spec

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