Hi there Pro, I will be your Independent Advisor for today, I hope we can both resolve your problem.
It looks like you are having a hardware related problem. To confirm if the hard drive is not detected by the motherboard, please boot to the BIOS.
To boot to the BIOS restart your computer and look for the prompt on how to boot to the BIOS, it can be F12. And then go to the Boot tab and see if your internal HDD is there. If not then I would suggest contacting the hardware manufacturer, as you may need to remove the hard drive and put it back in.