Inspiron 13 7000 Series 2-in-1 Laptop Charger no longer Charging

Awhile back, my friend gave me his Dell laptop that he got at the beginning of the year. Since he isn't a Windows guy, and traded it out later on for a Macbook. The laptop seemed 100% fine, until I started to plug in the charger. Automatically it gave me a "plugged in, but not charging" message. I figured something was wrong off the bat, since he's only used it once or twice the entire school quarter. He doesn't know anything of where the computer came from, other than his University provided it to him at the beginning of the quarter. So it's unknown if it's a refurbished/recycled laptop.
But for the while, if you positioned the charger just right. It would hold it, and charge up completely. I had no problems with it for sometime, but recently it hasn't been holding the charge. I've tried the flea power drain method, and see if that would work. But when I placed the battery back in, I still had the same problem.

• 
  PLUG IN CHARGER
  CHARGER PLUGGED IN, BATTERY NOT CHARGING
  SUDDENLY! THE CHARGER BLIPS IN AND OUT OF A CYCLE
  POWER EVENTUALLY DRAINS TO 0% AND UNABLE TO TURN IT BACK

I've only had this laptop for a few months now. Could it be the battery itself, or the charger. - Still it's weird, since the charger (when plugged into an outlet), is glowing green, indicating it's powered.
Are there any solutions to this, other than potentially having to buy a new laptop or charger in general?
Thanks a ton!