Boot device not found on HP ProBook 6560b laptop?

"eladdali, 3F0 is indicative of 3 things

1. Bad hard drive or partition structure,

2. Bad hard drive data cable

3. Bad HDD controller on the motherboard

First thing you can try and do is to test the Hard Drive in the BIOS if you can get into it. Boot up the notebook and press F10. If you can get into the BIOS you will need to run the self-test. See what it will show you. Personally I think that your drive has failed. Anyhow, check the cables as well, make sure it is all properly connected. If none of that works, I'd replace the drive. Hope this helps, good luck."

If is Bad hard drive or partition structure, what should i do to fix it, and reboot the sistem