Hi vasu212,
The issue is with the DC-In port, which needs to be replaced.
If the computer is under warranty, I would be glad to arrange a service on the computer. Check warranty status: http://dell.to/13VPd97
Please private message me the service tag, registered owners name, primary and alternate phone numbers, and address.
To private message me please click my user name and click Start conversation.
In case of expired warranty scenario, we would not be able to extend warranty entitled services.
If the warranty on the computer has expired, below link would help you in contacting expired warranty services (this is for US based customers):http://dell.to/VPYT4T
Awaiting your response!