Laptop black screen but will turn on

I have a legion 7 model 16ACHG6 and recently been facing this issue in which I got no image from it.

I was playing on the laptop and suddently the screen started dimming itself down for no reason (i have auto brightness off) until it went completely dark.

The laptop turns on, fans spin, rgb works but there is no image on the display, i tried plugging it in an external monitor, there was image and the system was working normally, but a day after Im not even able to plug it again as its not working anymore.

At first it would display the boot menu and then the screen would go completely dark.

Now not even the boot menus are displaying. Also I never noticed it before, but when the power cable is plugged in the laptop there is a red indicator light. Im not sure what it means.

I appreciate any help, thanks!