It is hard for a HDD that is detected properly in BIOS Setup to NOT show up in Disk Management. However, you have to look in the right place.
In Disk Management, look in the LOWER RIGHT pane. SCROLL if you have to, to see all its contents. This is where you will see valid hardware devices that Windows still cannot use because it does not understand the device. That is the case for a totally blank new HDD with no data.