problem with ASUS P7P55 LX

[alireza_sh]

hi
i have pc with this configur:
MB ASUS P7P55LX
CPU COREi 530
VGA HD5770
RAM 4 GIG 1333
when i start system with boot form dvdrom (iATKOOS S3 V2)when first scroon of boot screen system imidiatly restar?
plz help me