This is actually a typical issue if the OS is "blown" or the HDD has failed.
To test I get one of my bootable OSes out and look around using that. Here's my old advice which you can update to a newer version. At no time are we learning Linux.
If the HDD is blown, missing or corrupted try HDD tests. Here's a list with a nod to any that boot and run from USB or CD.
My Toshiba laptop is showing a black screen with reset and select proper boot device.
I've restarted it but it keeps showing me the same screen.