I think it best to assume it was the drive. If it were mine, I would want to be sure that I had a complete image of the drive stored externally or a clone on another drive.
Having that I would continue using the comp until the drive failed or started making more noise.
Windows 7 and 8 have the necessary software for imaging or cloning. If you don't have another 3rd party program for doing that.
Edited by buddy215, 23 May 2015 - 03:07 PM.
“Every atom in your body came from a star that exploded and the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics...you are all stardust.”― Lawrence M. Krauss
A 1792 U.S. penny, designed in part by Thomas Jefferson and George Washington, reads “Liberty Parent of Science & Industry.”