Despite their portability, many laptops spend most of their lifetime being plugged into their DC adapter. This means that they are prone to being knocked, tugged or dropped whilst attached to the wall via their small round charge socket. Inevitably this leads to damage on varying scales and has been a very common sight. The picture on the right shows a more dramatic example of a damaged socket.
Replacing these is a simple but time-consuming process. The laptop must be fully disassembled in most cases and the motherboard removed. Then the DC socket must be desoldered and replaced with a new part. I have performed many of these replacements and is almost solely responsible for my steady soldering hand.