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Upgrade to TIH 2012 - Windows Fails to Boot

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Having upgraded to TIH 2012, I restarted as requested, and now windows fails to start.

Startup repair shows the root cause as:
C:\Windows\system32\Drivers\snapman.sys is corrupt.

Using the command prompt, I can see that file doesn't exist.
I've also checked the registry for snapman, which isn't found.

I could just restore the backup, but thought I'd check here first incase its a fairly simple fix.

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SparkyMarky:

Try the advice in this article: http://kb.acronis.com/content/1620 to remove the registry entries that are trying to start the corrupt or nonexistent snapman.sys file.

Just sayin: Jun 8, 2006; Updated - Dec 21, 2010 are the dates of that fix. If that turns out to be the problem; isn't that enough time for the problem to have been fixed?

I'd already manually checked for snapman using that help article.
Have also done a search of the whole registry for 'snapman', which doesn't return any results.

edit (19:05GMT): Just thought I'd add in that I'm running Windows 7 Pro 64bit, incase that makes any difference

Hal:

Normally it isn't a problem unless something corrupts the snapman file (like a bad download of the installer) or a user deletes the file without removing the registry entries. The article is there for those rare cases.

SparkyMarky:

This machine is running Windows 7 64-bit and does not have any version of Acronis TI installed. There is no snapman.sys file present, so it isn't a generic Windows file that's producing the error message; it must be the Acronis snapman file being referenced somehow. If not in the registry then what is telling Windows to load that driver?

I presume you also checked these two locations referenced in the fine print at the end of the article? They are new to recent versions of TI:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318} -> LowerFilters

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{71A27CDD-812A-11D0-BEC7-08002BE2092F} -> LowerFilters

Also, when you say that you checked the registry, did you do this by booting to a Windows 7 installation DVD and running the Recovery Environment? If so, were you looking at the Recovery Environment's registry (which exists temporarily in RAM) or did you mount the appropriate registry hive (HKLM\System) from the Windows installation on your hard disk?

Am restoring the backup I have from Sunday at the moment, will report back once that completes.

Will re-download the installer before trying uninstall of 2011 and install of 2012 again.

Restore completed, uninstalled 2011 and installed 2012.
Working perfectly now.

Think something went wrong during the first install, as I just ran the installer to install 2012, rather than uninstalling 2011 first and restarting first.

Thanks for your help.

I like a good ending.