XPS 15-9560, won't turn on

Hello,

My XPS 15 laptop won't turn on. When I press the powder button, nothing happens (no fan spinning, monitor is off). There is not flashing lights anywhere on the laptop. The laptop is 2 years old. The laptop wasn't being used for 5 months previously but it was working fine before that.

Here are the steps I tried following this thread:

https://www.dell.com/community/XPS/XPS-15-Laptop-won-t-turn-on/td-p/5713338

1) Remove the bottom panel and disconnect the battery.

2) Hold down the power button for 20 second (excess power drain)

3) With battery disconnected, plug in AC adapter. Still no charging lights visible.

4) Reconnect the battery. Still no charging lights visible.

5) While holding down the power button, with the AC adapter and battery still connected, disconnect the battery terminal.

6) If nothing happens, repeat steps 3 to 5.

This didn't solve my issue. Any help would be greatly appreciated.