OK, I had my kids running around my room and kept tripping on my laptop's power cable. Then DC power jack was damaged. I had to always keep pressing the jack in order to charge my laptop. I reached my limit. I was almost throwing my computer out of my window, but it cost about $1700 three years ago. I decided to fix it. If you don't want to spend $400 by asking professional, you have option to do it yourself. My cost was about $12 ($7 DC jack, $5 desoldering braid).
This instructable does not require advanced soldering/desoldering skill. I had never desolder anything before, but was able to somehow desolder the jack.
The problem kept coming back. So I did permanent fix using modem port in my latest instructable