A patch is preventing the system from starting - Error code = 0 x 490

ConMac

Member
Dec 6, 2010
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:confused:I recently had to replace some bad memory which caused my home built system to fail to boot into Windows. I have a dual-boot (XP on one HD, and Win7 on a separate HD). The system has been running smoothly for more than a year until the failed RAM module. I can boot into XP, but not into Win7, not even Safe Mode.

On startup, it fails to boot into Windows 7. I get "Windows Error Recovery" with 2 options: Launch Startup Repair (recommended) and Start Windows Normally

When I choose Launch Setup Repair, it says it cannot repair this computer automatically. The Problem Details are:

Problem Even Name: StartupRepairOffline
Problem Signature 01: 6.1.7600.16385
Problem Signature 02: 6.1.7600.16385
Problem Signature 03: Unknown
Problem Signature 04: 21200566
Problem Signatuer 05: AutoFailover
Problem Signature 06: 19
Problem Signature 07: BadPatch
OS Version: 6.1.7600.2.0.0.256.1
Locale ID 1033

I hit Finish, then it shuts down.

Then I boot into the system DVD, and selected Repair your computer, which gives me the System Recovery Options:

I selected Startup Repair, and every test was completed successfully with a 0 x 0, except one, and it said:

Root cause found:
A patch is preventing the system from starting
Repair action: System files integrity check and repair
Result: Failed. Error code = 0 x 490

The odd thing is, when I repeat this test, this same error code appears, but later on it also says:
Root cause found:
Startup repair has tried several times but still cannot determine the cause of the problem

I tried "bootrec /fixmbr" and "bootrec /fixboot" and got "The operation completed successfully messages" for both, but they didn't work.

I also tried "bootsect /nt60 SYS /mbr" and got the message: "Successfully updated NTFS filesystem bootcode. Successfully updated disk bootcode."

I also ran"bootrec /scanos" and "bootrec /rebuildbcd" from the command prompt and got the message: "Total identified Windows installations: 0"

Could this be my problem? That even though Windows 7 is listed above as "(recovered)" in the Windows RE, that maybe Windows 7 is just corrupted beyond repair? I'm hoping that's not the case.

In addition, this issue has wiped all my restore points as well as system images. Any held would be greatly appreciated!
 
Last edited:

ConMac

Member
Dec 6, 2010
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Yeah, I figured that. When I do a fresh install of Win7, and restore the system image I made two weeks ago with EaseUS Todo Backup, is there anything I should do so as to not mess up my dual-boot system?

Thanks
 

dbcooper1

Senior member
May 22, 2008
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Have you tried 'sfc /scannow' from the command prompt with installation media in the drive?
 

ConMac

Member
Dec 6, 2010
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I have tried a couple of times, and I get this message: "There is a system repair pending which requires reboot to complete. Restart Windows and run sfc again."

Could this be from the "bootrec /fixmbr", "bootrec /fixboot", and "bootsect /nt60 SYS /mbr" I have previously tried?

Also, I have snapshots (Jpegs) of my Disk Management (using Windows and Mini Tools Partition Wizard) if that would help. How do I insert them here? The "Insert Image" option above prompts me for an URL; I have these images saved on my desktop. Thanks.
 

ViRGE

Elite Member, Moderator Emeritus
Oct 9, 1999
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Also, I have snapshots (Jpegs) of my Disk Management (using Windows and Mini Tools Partition Wizard) if that would help. How do I insert them here? The "Insert Image" option above prompts me for an URL; I have these images saved on my desktop. Thanks.
You need to host the images somewhere (e.g. imgur) and then link them here. The attachment option is only for moderator usage.