The connector on the Dell charger has 3 electrical connections, +, -, ID.
The ID connection fails because of a fault either with the charger or the Laptop so the Laptop no longer recognizes the charger so won't allow a charge cycle to start.
This generally is not a DIY repair, you need professional help but don't go to Dell as they charge an absolute fortune.
Computer Dave
May 2014
Automatic Answer
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