Runs great as long as it isn't turned off or unplugged
My laptop runs great as long as it is plugged in, and left on. If it gets turned off or unplugged it will not turn back on. The light indicating that it is turned on lights up and is solid (not blinking). The screen is black and the Caps light will not turn on. I can here the laptop running, fans etc. I tried all the usual tricks and nothing. However if left plugged in and “on” eventually it will boot up on it’s own. Hours or days later. What does this mean?