The Problem:-At startup you get the following error:-
"Error loading FLDRCLNR.DLL Specified module not found"
Solution:-fldrclnr.dll is a system file in c:\WINDOWS\system32. It is possible that this file is corrupt. Repair installation will solve the issue.
see:-'How to perform an in-place upgrade (reinstallation) of Windows XP' http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q315341