Does the system recognize the AC adapter or is it showing "unknown"?  F2 at powerup to get into UEFI setup to check.

yes sir, AC adapter is is there any fix ?

thanks for replying sir

thank you sir i wil replace AC adapter first then i will follow if it wont help 

thanks you for quick reply sir i appreciate you help 

If the system is under warranty, call Dell for repair.  If it's not, first thing to do is try a new OEM Dell AC adapter - if that doesn't solve the problem, replace the DC power jack:

< >

And if that doesn't solve the issue, it's the mainboard that's faulty and will need to be replaced.

Without a recognized AC adapter, the battery will not charge.