Kumenelo is a virus. It is possible another virus disabled it, and didn't disable the loading of it in the registry of windows. Or, perhaps the virus is updated and doesn't need that file anymore. Or, it has been removed. Since you do not know where it came from, or what caused it, the best solution is to backup all documents. Then, format the harddrive, install windows (from a cd with SP2 or SP3 integrated upon it), then install drivers, update windows completely, install good antivirus (so nothing norton, mcafee, etc) and then install your programs, and put back the documents.