Macbook repaired immediately

My Problem

My screen froze in class while taking notes. Forced shutdown my laptop, hoping that it'll turn back on like other times. When I tried turning on the laptop, a white screen appeared with a folder. Found out from mac forums that the computer was not able to "recognize" the hard drive due to cable worn out.

My Fix

Quick and simple. (if you know what you're doing)

My Advice

Read forums for advice.