That's a common problem with Dell laptop power cords. They fail right at the plug that goes into the computer. I have one from 2007 that I've used very little. When I do use it I try to be extremely careful with the power cord. I bought a newer laptop that has a smaller A/C adapter so I can't use it with the Dell. I was then given an old HP laptop that included an A/C adapter with the same power rating as the Dell I have.