Quote from: The Register article by John Leyden on April 12, 2013 for complete article click here.
Windows 7 users should uninstall a security patch Microsoft issued on Tuesday because some PCs failed to restart after applying the update.
The software giant advised users of Win 7 and Windows Server 2008 R2* to roll-back a patch within MS13-036, a security update that closed two vulnerabilities in the Windows file system kernel-mode driver. Exactly how one nukes the wobbly patch is explained here.
The advice follows complaints that after applying the update computers would either fail to restart or applications would not load. Users who experienced problems were sometimes confronted by "fatal system error" warnings on start up, as illustrated by Sophos here.