Plugged in not charging

Hello! I have a dell inspiron 7537 laptop running windows 10 home. I have issues with either battery or something else.. My power cord is connected but its not charging the battery.I have tried every trick on the internet but no cookie so far. I've had the same problem with the same laptop before but then formatting my PC solved that issue. Then this problem suddenly appeared again. Biggest problem for me is that i cant play any games anymore because my laptop is not running on full power due to not charging. At least thats what I think. Games ran perfectly before. I thought maybe removing the battery will help me to play at least but instead, my laptop shuts down when i run ANY game on my drive. For me its not acceptable. I've been a fan of dell laptops for 8 years now, this is my third one that ive bought brand new. I really hope that there is a solution for that, otherwise I'm forced to change teams :S Any help?