Laptop ac adapter can not charge for your laptop to perform? Many friend around me encountered this problem. "I've replaced both battery and AC Adapter, but why it still could not charge?” Maybe you are one of those who are complaining.
Broken battery and AC adapter are the most common reason while there is another one that most people would neglect : Loose or Broken DC Power Jack.
Symptoms of a broken DC power jack:
How some repair centers handle DC jack repair:
Most service centers don’t want to deal with this problem by attempting to repair the DC jack. Many, including the large nationwide stores and the laptop’s manufacturer, will either tell you the machine is not repairable or that they will need to replace the motherboard. These quotes usually run from $250 to as much as $800. They choose to ignore the fact that a broken DC power jack can be repaired without a motherboard replacement because they are not equipped with the tools or training to do DC power jack repair on your laptop.
How a DC jack breaks: