Win7 BCD error 0xc000000f fail to find os loader - defrag moved boot file? RRS feed

  • Question

  • Hi guys

    I'm having a bad problem, this has occurred 4 times now. (over a couple of weeks)
    Basically something causes the the BCD or bootloader to lose the windows 7 installation

    the last time this happened (today), i did a defrag with perfectdisk 10 (build 124) and a nvidia driver install just before a restart.

    on restarting i was presented with: (although different error code than previous, but basically the same result)

    Boot manager generic failure:
    Fail to find os loader
    i started the recovery startup from disk, which gave error

    "Boot manager generic failure
    Root cause found: 
    Boot manager failed to find OS Loader
    Repair action: File Repair
    Result: Failed. Error Code = 0x490
    Time taken : 7099 ms
    Repair Action: Boot configuration data store repair
    Result: Failed. Error code = 0x490
    Time Taken: 171ms
    Repair action: System Restore
    Result: Completed Successfully..." 
    i did the various bcdedit rebuild etc,, but that found 0 OS's
    i did notcie the drive letter of the repair changing randomly as well. not sure why, no drives are changed

    I have checked the harddrive for errors / bad sectors etc.. all ok
    I gave up and did a reinstall, after i did a low level format.

    Once installed a ran a prefectdisk defrag, as i hope it was the cause. but it didn't happen this time round though.
    Would PD move the bcd out of the boot sector limit of the HDD? ???

    like the user dbeachy1 Users Medalssaid on here

    any ideas? i don't want to reinstall programs again, if it c##ks up few weeks later....

    all startup repairs do jack...

    any 3rd party bootable bcdediting programs? (easybcd is not)


    • Moved by Ronnie VernonMVP Monday, October 12, 2009 10:26 AM Focus (From:Windows 7 Installation, Setup, and Deployment)
    Sunday, October 11, 2009 4:34 PM

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