Thank you ifixit!!!
When I turned my mac on I got the question mark of death. I could turn the mac off and shake it a bit and it would come back on for a minute or two but then it would freeze again. I opened it up and made sure the hard drive cable wasn't loose and replugged it in but that didn't do the trick. It was obviously the cable.
Very simple repair! Besides the fact that I had to search high and low for a 1.5mm screwdriver.
Be sure to get a 1.5mm screwdriver or something VERY close it that.