correct me if im rong, but maybe if the mobo keeps trying to redetect your hardwear each time, it may cause it to start slow. make shur your jumper settings on your drives are set correct(maybe if there on CableSelect u may wont to try them on MA or SA), and there on the right IDE terminals. CMOS battery may be a problem? i wouldnt have a clue how to check it though, other then replacing it.