You receive an Event ID 55 or a 0xc000021a Stop error in Windows 7 after you install security update 2823324
Microsoft is investigating behavior where systems may not recover from a restart, or applications cannot load, after security update 2823324 is applied. We recommend that customers uninstall this update. As an added precaution, Microsoft has removed the download links to the 2823324 update while we investigate.
MS13-036: Description of the security update for the Windows file system kernel-mode driver (ntfs.sys): April 9, 2013
KB2839011 Released to Address Security Bulletin Update Issue
...Weve determined that the update, when paired with certain third-party software, can cause system errors...