please help... can't get my new shuttle working right :(

hello everyone, just brought a SN68PTG5 (spec in sig) it all work aparts from this pain of an issue

i get this msg from cold booting, when restarting windows i have no issues

“verifying DMI pool data disk boot failure, insert a system disc and press enter”

my computer is using sata and it seems like it fails to detect them from what i can see on the pre boot post, however if you hit the reset button on this msg the next time it sees the sata drives and loads correctly, and i have trouble free computing, until i turn it off again and have to go through the whole thing....

this is doing my head in! must be a bios setting or something i'm doing wrong, checked the cables and the hard disc and dvd drive work fine when loaded

Please can someone help me.... i'm lost!