I was moving a hard drive from an old system when this happend to me These links from the Gigabyte site fixed the problem for me. Seems stupid uninstalling the driver and re-installing it this way but it works. http://www.gbt-tech.co.uk/Support/Motherbo...aspx?FAQID=2538 http://www.gbt-tech.co.uk/Support/Motherbo...aspx?FAQID=2501