There is likely a fault with at least one of three items: It's a process of elimination to figure out where the problem lies, or at least where it doesn't lie. For example, if your AC adapter is recognized and works on another Dell laptop, then the problem is likely your charging jack or charging circuit. Check if the light is lit at the plug end of the AC adapter or on the adapter block. And see if that light remains lit when you plug it into the laptop's jack. If the AC adapter's light goes dark when you plug it into the laptop, then the fault is likely with the jack or the circuit.  Try another genuine Dell AC adapter of at least the same wattage/amperage. If that second Dell AC adapter works, then the fault is likely with your AC adapter. If it doesn't work, then the fault is likely with the jack or the circuit. The jack is a relatively inexpensive item that is not difficult to replace for someone experienced in working on laptops. If a good AC adapter and a new jack won't work, then the fault is likely with the charging circuit on the motherboard, which would normally require replacement of the motherboard. Also, it's worth trying a reset: There is a centre pin in the adapter's plug (the end that connects to your laptop's jack/port). If that centre pin is broken or bent, then that is the cause. If it's bent, you could try gently to straighten it. If it's not bent, clean out the connector with Q-tip and 99% alcohol, and do the same to the jack.
hi to all,ok i have a latitude e6430 laptop into which i have just installed a new dell battery.The battery works fine without the adapter but wont charge when i insert the adapter to charge it.It is a dell adapter so must be compatable.I have tried taking the battery out and holding the power key for 30 seconds the replacing it.I did a diagnosis check and everything passed.The adapter came back as unknown but it is a dell and shows the green light when switched on at the socket.Anybody know any fixes for this as it is driving me insane.Many thanks in advance. Mally
battery not charging