American Megatrends Bios.If the bios isn't detecting the cdrom or ide drive the 1st thing to check is the cable. Make sure you have the red stripe on the ide cable on the correct side. If it is and it still doesn't work, replace the cable. IDE ribbon cables are shit, and break a lot.
Tell me what bios you are using.
It's not the cable, I tried with another cable as well, and I put it the correct way.