i need help with laptop problems

[pappastone]

i have a Dell Inspiron 15 and when I plug in my charge to the outlet the power cord shows green
put when iplug it into my laptop from the wall outlet my laptop screen flashes just once than I lose all power laptop wont turn on and the power cord light doesn't show green anymore

I thought it was just the power cord so I replaced it but even with the new charger it does the same thing maybe it's the powerjack itself or mothermoard I donr know any suggestion please anyone thank you

 

[Fira PT04]

Have tryed without the battery pack. Remove the battery and mains, hold the power button for about 15-20 sec to power cycle and power the laptop from the mains only, without the battery.