Hi TechSpots !! Recently, I had to perform a WinXP Repair on my system due to an error : Security Accounts Manager initialization has failed. Error: The handle is invalid". The simplest solution to this is to get to the SAM file and replace it with a good SAM file from Windows\repair folder. The Windows Repair or Recovery console does not help , because both need authentication ( refer http://support.microsoft.com/default.aspx?scid=kb;en-us;316751 ) I did find a way to get the to SAM file to replace it ( refer http://www.nu2.nu/pebuilder/ ) and was able to repair existing Win XP, thereby rescuing my data. Thanks to helpful suggestions from "TechSpots" ! However , there are problems ! Now, in the Win XP theme, the Start - All Programs menu does not expand. Clicking on the Run link throws up a message box saying "Windows cannot create a shortcut here." and gives an option to create on the desktop. Creating such a shortcut on the desktop makes no difference. When I switch to Windows Classic theme, then clicking on the Start on the task bar does not do anything , the same with Help and Support link on the Start Menu !! Any suggestions on getting over this one without having to do what Microsoft usually recommends "please reinstall clean" ?