Seagate Momentus XT 500GB Hybrid

I bought one of these on the 31st of January, and today completed an RMA to get a replacement.

It looks like the controller board has gone as the disk spins up but it’s not detected in the BIOS.

I could say don’t buy these Hybrid drives but in this case it may have nothing to do with the fact it’s a Hybrid. I’ll probably put the replacement on Ebay as I am unlikely to trust this as a system drive again so take from that what you will.