I doubt there are any issues with your mobo and drive. What version of Window$ are you using?
Try to load a diag diskett for your Raptor just to make sure there are no issues, as well as to ensure you have a fully raw and zero'd out HDD.
I would suspect that your need to configure your PC to boot to Sata cannel one or two.
Also if there is raid on that board, make sure its enabled, As said be for, I dont have that mobo, but some of them disable sata when raid is disabled. Lastly, update the bios if possible, some older boards intended to have sata as a storage solotuion not to store a bootloader.