Hello guys, i've got a huge problem with my Dell Latitude e7440. Battery is not charging. When i took the battery out and put official Dell cable in - nothing, it's not even turning on. The screen is all black
It's interesting, because few days ago I replaced my old not-working keyboard with a new official one. Everything was fine for 3days and then this happened.
Here you have a link to video of the flashing battery icon on top.
Link: https://youtu.be/QjWwn1qmOQk
Please help, this is a fatal problem for me. Do I have to buy a new battery? I don't why it worked for 3-4 days and this suddenly happended.