hang-the-9 :
If the hard drive can't be detected in the BIOS, and you know you have it connected probably, that would be a physical issue and it has to be repaired or replaced. Possibly the system board or connection.
tnx ,man,,, but i think my system board is ok,,,, i actually my hard drive on different pc but same thing happens,,,, i cant see it in device management,,,
really tnx for the help ^_^