Corrupted system\COMCTL32.DLL



Random errors in shared objects, e.g. mouse moving over desktop raises exception. Causes due change in COMCTL32.DLL file. The file had equal size and date but part of then was overwritten by garbage (probably when system crashes). Find original file on installation floppy (CD) and rewrite it (probably IE or Windows).

System file checking simplifies \system\SFC.EXE.