Hard Drive Cable easy to Damage but easy to fix!
If you ever have opened up your mac to change hardware then you might have damaged this weak cable... Although I bet you don't even need to open the MBP case to damage it
1min completion time... Probably 3min
Mid2009 MBP 13" has some quirks but I still love it, now SSD drive in it, so now as fast as most computers on market, but don't quote me on that I really have no idea, no need to look at other computers now that my baby is fixit'd