Thanks for ythe reply.
I am unable to go to disk management screen as Window will not load.
My system was windows 10, upgraded from Windows 7. My repair disk is windows 7 as my SSD had the Windows 10 on it. MySSd is definetly bad.
My understanding is that if CMD Prompt cannot see a HDD, then windows will not see the drive. Do you have other information?
My HP Z620 is at the latests BIOS level as I had updated it so I could install a Turbo PCI drive. I have not tried to install the PCI drive, as I don't want to take a chance on destroying it.