not sure what is up

I am not sure that it is my hard drive, but that is what I think it is. I am having problems when windows loads... It also stalls when in windows. I ran a scan on my raptor and it said the cable was bad. I can wiggle the connection after it locks up and it will work? I have gone through a few cables. what does this sound like? mother board? hard drive connection? power supply? I need help, it is starting to piss me off