While I was upgrading my early 2011 13" MacBook Pro's HDD to an SSD by the instructions on iFixit, I think I broke my camera cable. When I tried to talk to my friends on Google Hangouts later that day, my computer didn't detect the camera. There wasn't a "no signal" error or anything; the computer just had no idea that the camera exists (but for the record, the microphone still works fine). That was a few months ago, and the camera's never come back since then.
Is there a way to definitively prove that the issue is that I broke the camera cable with an overzealous pull? If it does happen to be a software issue despite all my troubleshooting efforts till now, I'd very much like to know.
Assuming the issue is that the cable broke near the socket, what's the least dangerous way to fix it?