Gaming PC wount start , cant find hard disk , try'd to boot

Registration date
Friday October 12, 2012
Last seen
October 12, 2012
Hi there . i bought a gaminc pc about a year ago , then i got truble with my motherboard about a half year ago , then i changed my motherboard to Maximus IV Extreme-z , it all seems to work untill a month ago , my pc sudenly turned off , and wount start , it said no harddisk detected , so i bought a new harddisk , hooked it up and still the same message , so i lookt over the wires and everything looks good , then i try'd to boot the windows cd to install windows to the new hard disk , but no , still no hard disk detected