It's the fastest and is likely correct (you cannot fix hard drives, actually no computer component is "fixable"). If you really want to make sure that the hdd is failing, download the drive diagnostic tools from manufacturer website, and run them.
I don't know if this is the only issue your rig has, but surely this is an issue.
If you want to transfer the stuff from this HDD to a healthy one (avoiding reinstallations and stuff) and you don't know how to do it, just ask.