My Lenovo ideapad s400 touch laptop is t charging?

The charger is plugged into an outlet correctly and it's firmly placed in the ad adaptar. It was charging normally before now it's on 60% but it's not charging? WhAt's wrong?

Added (1). The laptop isn't charging

Possible short in the cord or the jack on the comp. Wiggle the cord around near the jack end. Watch the charging icon on the comp to see if it changes. If so, you need to have it diagnosed and obviously repaired.