Why is my Chromebook not turning on?

Hello, my Chromebook is not turning on. Originally, just the screen wasn’t working. I was able to use a USB-C to HDMI adapter to connect it to a monitor, then tried to do Esc + Refresh + Power, which turned off the Chromebook. Now, the charging LED won’t come on, and the Chromebook won’t turn on. I tried holding the power button for 10-20 seconds, tried pressing the power button and the refresh button for 10-20 seconds, etc.

Thanks for the help