Many guys have abused their computer jack,or something else, therefore they cannot recharge their laptop batterys or for that matter, unable to use their laptops, and have tried to charge battery different ways. Others fell victim to greedy technicians who want to sell you motherboard for 250$++ and more. So there you go, you have...
"This machine has no power 1.- test power from adapter - If pass, just plug and test laptop - If fail, find new adapter and test laptop - If after the new adapter is plug the laptop has no power we need test other components, power jack, motherboard, on this case the adapter was defective Easy test" -- Recorded live on Justin.tv...