Hi, From what you explain, it seems weird. As davis, said there is no slave in sata drive.
You would have connected the other drive in the same computer, as another drive which is not recognized by your computer. If it is recognized by the other computer, it is definitely connection failure and fault may lie with the connections, or power cable failure.
There is no other explanation possible. May be hardware change service is not started. pl check the service in services.msc. I know that this may not be the case also.
How there is slave adjustment in sata, that i never heard of