Drive spins but BIOS can't see it

My Server was found this morning in a constant reboot. The hard drive spins but BIOS no longer sees it. The drive is a WD1600YS

IF the drive is spinning, can I reclaim the data with any type of software that WD offers or do I need to invest is something from a third party?

Try diagnosing your drive with AFF Repair Station:

Here are some freeware utilities that will also test your drive’s firmware modules:

You might also like to try this demo:

I haven’t used it myself, so I don’t know if any functions actually work.