Here's what I would do if I was your PC tech troubleshooting your hard drive.
1. Unplug all cables and then plug them back in
2. Go into BIOS, if BIOS reads your drive, then it might just have bad sectors, or your cables were not connected properly and you should be read to go. If not, read on.
3. If BIOS didn't read your drive, or it spit out some weird characters your drive is dead if not, proceed
4. Try booting a live CD (depending on the model of your drive, something like Seagate or Western Digital Lifegaurd tools) Another option that will have some other nice tools to use is the Geek Squad MRI disk (Has a lot of good HD test tools)
5. After a scan and a fix, give it another go, if it works congratulations, if not, time for a new hard drive.
That's what I would do
@Kulverstukas
Yes a floppy would work as long as the drivers are on it, but how often do you see floppy drives in the standard users computer