That's a different story if you don't have an OS installed. That would explain the error. Make sure that you have an OS installed and if the install...
BIOS (basic input/output system) = BFD. https://support.hp.com/us-en/document/ish_3912651-2318005-16 You indicated a previous issue with the system....
It sounds like it can't find the hard drive. I suspect either a problem with the drive or a problem with the mobo. What was it doing before? Have you...