damaged worse than he thought
our CEO had dropped his macbook pro, and never complained about the sluggish performance after the drop. A few months later he asked for an upgrade to a hybrid HDD, When I took the computer apart I noticed the sata cable was slightly torn, and not to my surprise I couldn't install on the new drive.
Simple, thanks to ifixit and quick shippping.
I was able to get it done while compiling something in xCode
If you drop your computer, inspect for further damage beyond just what happened to the outer case.
Don't worry, ifixit probably has the parts you need.