Charging problem .hardware problem

Hello,

When i connect my adapter to my laptop,it normally charging . But after 2 or 2.5 hr it shows not pluged in though adapter is connected. If i shut down my laptop for sometime and again start it and connect adapter same thing occur.what is the acctual problem?

I didn’t find the right solution from the Internet.

References

http://geek.digit.in/community/threads/charging-problem-hardware-problem.200512/

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