I have just set up a new system using the above motherboard. Initially, I had a 500gb IDE hdd, and a dvd. I used the correct jumper settings on each, but the BIOS recognised the set-up as third primary and slave. I decided to use a SATA hdd, and now the BIOS recognises it secondary slave, and the dvd, jumpers set to master and plugged into the IDE, as third primary. Any ideas as to why?