SATA DRIVE IS NOT RECOGNIZED

Hi all,
My computer is now unresponsive. A message appears and it says SATA DRIVE NOT RECOGNIZED. It is requiring a reboot, but after rebooting the system, same problem appears. The SATA drive is unrecognized. The screen turned black, although I can still see the toolbars. All programs installed and personal files are missing. I tried to run on SAFE MODE and tried to restore the computer on a previous date, but it is not working. I checked BIOS and SATA is enabled. What can I do to make the drive recognizable or how can I make my computer run normal mode again?
Thanks.
