clfs.sys error when installing (configuring) service pack 1

Discussion in 'Windows 7 Blue Screen of Death (BSOD)' started by facepwned, Sep 18, 2012.

  1. facepwned

    facepwned New Member

    Sep 18, 2012
    Likes Received:
    Hello, i get the same error message over and over again when i try to install service pack 1 on my windows 7 ultimate 64-bit, and if you leave it running it will bsod as soon as windows starts, i'm not sure what information to put on here, but i've tried nearly everything that there is to try, but nothing will fix.
  2. usasma

    usasma Fantastic Member
    Microsoft Community Contributor

    Mar 22, 2010
    Likes Received:
    If you're able to get into Windows - please provide this info:

    If not, then please hit F8 just before the Windows Splash Screen shows up
    then scroll down to the "Disable automatic restart on system failure" and select it by pressing Enter.
    then boot again and see what the screen says.
    Here's the information that we need from it (the stuff annotated in RED):

    There are 2 common reasons for failure to install a Service Pack:
    - outdated drivers
    - malware

    Please update ALL drivers from the manufacturer's website
    Then scan for malware with a couple of these free scans: Free Online AntiMalware Resources

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