So I just turned on the old laptop, which I knew ahead of time had something wrong, but I never got down to the bottom of it. It's a bad HDD, its a pretty old laptop. So anyways, I was looking to replace it, but I have no idea what compatibility it is. And also, lets say I find out what type of HDD it is, do all laptop HDDs have the connector in the same place? I'm using a Dell Inspiron 8100, and it actually plugs in. I tried Googling the type of HDD, but no luck. I also tried taking the HDD out to look for the info, but nothing. So if anyone can help me out that would be great. Thanks.