dfi lanparty pro 875b problems

been running fine for two weeks and today i got the bsod.
>when i went to re-boot it i get the following.
>btw, it automatically went back to 200fsb and seems to have gone
>back to default settings.
>
>verifying dmi pool data boot from cd.
>disk boot failure.
>insert system disk and press enter.
>
>i would appreciate your help in getting my machine up and running
>again.
>