My friend got into my car today and accidentally bumped the right hand side of his passenger seat with his leg.
After that my head unit wouldn't turn on. I also realised that the USB cable was not working and neither was the lighter thing you pushed in and heats up. I'm guessing a cable disconnected or something?

Does anyone have any idea what it may be so I can look it and try fix it? I'm not quite sure what to be looking for.

Thanks in advanced!