No Boot Device Found and Hard Drive Working Outside Normal Parameters

This is a refurbished Dell Inspiron 11-3168. The OS is Windows 10. I know it's in the wrong category, but Inspiron 11-3168 doesn't have it's own category on here for whatever reason.

So my computer ended up getting a blue screen of death one day. It was taking too long to finish restarting, so I turned off the computer to see if it would MAYBE do the trick... That was a very bad idea.

Ever since then, I have had two problems: The first problem is that everytime I would try to turn on my computer, I would get "No Boot Device Found", and would be forced to turn off the computer. I think I tried everything I could think of. I went to the Aptio Setup Utility, and:

If I disabled Windows Boot Manager: Still no boot device found.

If I disabled Fast Boot: Still no boot device found.

If I disabled Secure Boot: Still no boot device found.

If I disabled Load Legacy Option Rom: Still no boot device found.

If I disabled Windows Boot Manager AND Secure Boot: Still no boot device found.

If I switched from UEFI to Legacy: Still no boot device found.

If I disabled everything: Still no boot device found.

If I changed the boot priorities: Still no boot device found.

As for my other problem: For some reason, my harddrive is operating outside of normal parameters and that I need a new one. My computer's warranty also expired. That's what I was told when I went to boot diagnostics.

Something that used to happen was that "Repairing Your PC" loop. That stopped occuring however, and now it only says, you guessed it, "No Boot Device Found". So... yeah, I don't know what to do now. Is there a way I can fix this somehow? At least without having to spend money? And if the harddrive is "operating outside of normal parameters" am I still able to at least get my stuff from off of it somehow? I absolutely have no idea what’s going on.