I've got a laptop which is something around 30 years old, and I like to just run that old machine again, but the problem is when I press the power button, it only lights up the screen and beeps at boot.
It shows nothing on the monitor after that, but I'm pretty sure it's not the monitor's problem since all the features on the monitor work fine (like increase/decrease the light) and there is no crack in the LCD.
I was just wondering where should I begin searching for the problem. And before anyone asks – it's a Zenith laptop model ZWL-184-97.