Brand new desktop, when booting the computer I get the following error: "Boot device not found".

When running the Hard Drive test I get a error indicating that the hard disk does not exist.

I have been able to make the computer run on occasion after pressing F10 on restart and applying default settings. Initially this had about a 50% success rate. When trying again, it does not work. I have tried setting BIOS to enable legacy but this doesn't work either.