I'm trying to plug a 1TB Sata HDD. I already have a 500GB one. However, the SO (Win7) doesn't detect it, neither does the bios.
I tried switching SATA ports with the older HDD and with a DVD Drive, it doesn't work. I tried switching power cables, not detected. I even tried connecting it alone (e.g. not connecting the other HDD and DVD Drive).
The bios configuration is in "native (enhanced)"; so I don't think it is a problem there.
I noticed that the new drive spins for about half a second and stops when I push the power button. It also takes significantly longer to boot with the new HD plugged.
Faulty hard drive?
Yes, faulty hard drive. More specifically: electronic failure. A recovery company will be able to save your data and it would be pretty cheap too if it's actually the electronics. Last time I paid $70 for one 1 TB + cost of a new HDD at the same size. All they did was to exchange the controller card and copy the data to the new HDD.