I have gigabyte GA-945GCM-S2C MOTHERBOARD in two PC in both PC have seagate ST3160215AS SATA HDD. From some days when computer start it show message " A disk read error occured" press ctrl+Alt+Del to restart computer or some times it show message "Error in loading operating system". when I connect HDD to Other SATA port of same motherboard its works fine and next time I start PC then same problem ocured. Again I do same process it works fine and when I restart next time it show same message and not start. I unable to deside that the problem in motherboard or HDD. plz any boady have its solution plz help me ( sorry for my english) I try seatoos short DST is falled