I bought a new Dell power adapter and a new Dell battery, but the battery will not charge. Just like before I bought the new adapter and battery, when I plug in the new Dell power adapter with the new Dell battery installed, the battery status light comes on "Blue" for about 3 seconds then goes out, and the battery does not charge. The power adapter keep the notebook running by way of the power adapter, but because the blue status light goes out after 3 seconds the battery does not charge at all.