I am currently building a machine for some Linux development. Here are the details
ASUS M4A78T-E Motherboard (SATA-300)
Hitachi Ultrastar 300Gb SATA-600 HD
The problem is that the HD is not detected by the motherboard. Which leads me to think that 2 things could be wrong, either the motherboard is not able to detect the HD due to SATA-600 HD which I understood to be backwards compatabile or the HD is broken.
Any ideas ? I read on other posts that maybe the HD can be changed to SATA 3 using a Hitachi utility, but I dont have another computer to change this. There dont appear to be any physical jumpers to change the transfer rate.
Try holding the drive when you turn on the PC. You should feel it vibrating after a while. If you want, you can take it out of the HDD compartment of your case and hold it up in the air. It should give a noticeable jerk when you press the power switch.
OK, then it's probably the drive. It's probably not spinning up. You did say there are no jumpers, so there are no possible jumper mistakes like setting the drive to staggered spin-up. Exchange it for a new one.