After removing version 5.1, clearing all registers, and deleting all folders, the computer asks for the original CD containing version 5.1 and the ECDC5B.MSI file. However, after you point to the file on the CDROM, it says you must use the correct file that came with your system. Well, I have no other CD from DELL containing this software. I am caught in a never-ending loop with the computer constantly asks for this program and I have nothing to give it. I cannot apply the upgrade until I install the software. Any help?