Bios not detecting hard drive

Hello there,
I have looked on this forum and have not yet found the answer to my problem. Here it is, I have an Asus M2N-MX SE PLUS mother board and when I start up with my hard drive plugged in bios does not detect it. but when i startup with only my cd drive then it will detect my cd drive and if i startup with both it wont see either of them. I have tested the hard drive on another computer i built and it works perfectly.

i have a AMD 64x2 5400, Western Digital 160GB IDE, Nvidia Geforce 8600 256mb, 2GB ram. if you need more specific i can get them to you.

thanks in advanced i would really appreciate it.

 

There are jumper pins on the back of the drive? yes there are when i use both cd drive and hard drive and they are set to master and slave and i dont use any jumper when the hard drive is by itself
Master - Slave and CS (cable select)

Which one is yours set yo and have you tried different ones? which one of what i dont get what your asking.

 

yes the hard drive is on the end of the cable and i have already tried doing cs on them both

 

ok the mobo is new and so is everything else i just started trying to install the os onto the hard drive yesterday and it didnt read the hard drive.
I have tried a different ribbon and a different hard drive that already has xp on it

 

ok i updated the bios on my system and it didnt do anything can anyone help me