Hello.  I have a refurbished Latitude E5570.  The battery was swelling, so I removed it.  Afterwards the laptop was working normally when plugged in.  I used it several times over the course of two days, including unplugging it a couple of times.

But now it won't power on. The adapter has a green light. When I plug the adapter in, the battery light on the front of the laptop lights up for a second.  Other than that, nothing happens at all. No more lights or any kind of response from the power button or anything. I tried holding the power button down for a long time both with the plug in and not.  

Thank you in advance for any advice you might have.