Check for dirt or if there is anything in there that might be keeping the drive from connecting. If there dirt in the port try goingblowing compresse air in the port you shouldbe able to pick some up at staples or your office supply store. They come in a spray paint kind of can. This hapened to me before. Just becarefull with the air spray in bursts not full on, and the fumes can be stinky.
---------------
Your Toast Has Been Burnt, and No Amount Of Scraping Will Remove The Black Parts!