One of the more costly repairs for a laptop is a loose or broken DC jack. Be it bad design, or bad users, these things are very fragile. They don’t last long no matter what name is on your laptop.
Most DC jack do not have enough internal reinforcement to meet the demand caused by movement of the power plug. Quite often the DC jacks simply fail under normal conditions. After a year or two of usage, the thing just comes loose. The issue that upsets customers the most is when the laptop gets dropped and the plug jerks the DC jack loose. (ouch) In rare cases, the jack was not installed well by the manufacturer.
So what do you do?
Most repair places will only offer to replace your motherboard. While that does work, its the most expensive option. However, it’s also the option that will probably last the longest. The second choice is to re-attach the DC jack to the motherboard. That usually saves you a few hundred dollars.
Like all things, you get what you pay for and most “re-attachments” never last as long as the original job from the factory.
Why you ask?
These PBC (printed circuit boards) are built by machines. Doing it by hand is not likely to match the precision accomplished by machines.
We usually try to re-attach the DC jack when it can be done. Sometimes the PCB is damaged, and a new jack wont fix the problem either.
Then its either a new MB or a new laptop. Windows 7 is a nice upgrade anyway!