My HP Pavilion Plus 16 (product number 9R8T4UA), will not start. One of the battery screws felt off and was rattling inside the case. I do not know if that is what cause the issue.
Connecting the external power adapter - the LED, next to the DC jack, turns ON. Also, it seems it charges the battery, because sometimes if maybe amber color and then turn to white.
Pressing the power button, only the LED in the power button turns ON - nothing else - no fans, no keyboard, no LCD.
Holding the power button pressed, eventually turns off the LED light on the...