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Windows 7 "a patch is preventing the system from starting" error code 0x490

    Question

  • I have a Windows 7 machine.

    It was working fine.

    Now it will not boot.

    When I try system repair, it says:

    Root cause found

    A patch is preventing the system from starting.

    Repair action: System file integrity cheack and repair

    Result: Failed. Error code 0x490

     

    I have tried doing safe mode, last known good configuration etc and nothing works

    Also, I tried to restore to an early checkpoint, but it claims that none exist, even thought I know we save restore points.

     

    Please advise?

    Thursday, February 24, 2011 11:03 AM

All replies

  • Hi

    I have exactly the same problem

    However, I can boot in to safe mode, but fails again when I start up "load basic drivers with diagnostics" using msconfig

    I have restored this partion with an Macrium reflect image created 6 months before and it still fails to load.

    Also I have unplugged everything except the monitor, and still the same

    Any help please?

    Thursday, February 24, 2011 4:18 PM
  • "I suggest running Command Prompt from the repair menu and then Check Disk:

     

    1. Insert the Windows 7 Disc and boot from it.

    2. In the recovery menu, choose Command Prompt .

    3. Type the following command and press Enter:

     

    Chkdsk /r /f

     

    Please also try the following commands and press Enter at the end of each line:

     

    Ren C:\Windows\winsxs\pending.xml pending.old

    Ren C:\windows\SoftwareDistribution SDOLD

     

    Regedit.exe

     

    When the register editor opens, please navigate to the following key:

     

    HKEY_LOCAL_MACHINE\COMPONENTS:

     

    * High light the COMPONENTS key. Please check if the following values exist in the right pane:

     

    AdvancedInstallersNeedResolving 

    PendingXmlIdentifier

     

    * If so, please right click on them and choose Delete them. Confirm the operation.

    * Restart the computer."

     

    Quote from : Vivian Xing

     

    http://social.technet.microsoft.com/Forums/en/w7itproinstall/thread/227bcd32-f0dd-4aab-942e-07e0cadec083

    Thursday, February 24, 2011 4:24 PM
  • This did not work

     

    firstly C:\Windows\winsxs\pending.xml did not exist

    I did rename C:\windows\SoftwareDistribution

     

    Also HKEY_LOCAL_MACHINE\COMPONENTS did not exist

     

    this did not solve the problem

    any other ideas?

    Thursday, February 24, 2011 11:09 PM
  • Hi,

    You may consider an in place install.

    Also, refer to the following link.

    http://social.technet.microsoft.com/Forums/en/w7itprogeneral/thread/299b227b-fa38-4902-b41a-d868075d763e 


    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”
    Saturday, February 26, 2011 9:33 AM
    Moderator
  • Juke,

    to do an "in place" install, I beleieve I need to be able to boot into windows (which I can not do).

    Can you please advise?

    Monday, February 28, 2011 1:22 AM
  • Hi,

    Can you boot in Safe Mode as Terand says.

    If so, booting in Safe Mode and try an In Place install.

    If it can not, I think you need to do parallel installation.

    Thanks.


    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”
    Monday, February 28, 2011 2:07 AM
    Moderator
  • If anyone else runs into this issue and you recently made some BIOS changes, check your BIOS settings.  I updated my BIOS and loaded defaults like the instructions recommended and didn't realize that my SATA controller was set to AHCI when Windows was setup on my PC.  When the defaults loaded, it went to IDE and I would get a BSoD shortly after the MS flower animation would start.  The minute I changed my SATA settings back to AHCI, it started up normally.
    Monday, April 30, 2012 2:48 AM
  • In my case LKGC worked...
    Wednesday, May 09, 2012 10:29 AM