Nothing Showing on Monitor

The most common way that a computer "won't turn on" is when the PC actually does power on but doesn't display anything on the monitor.

You see lights on the computer case and hear fans running from inside but nothing at all shows up on your screen.

There are several possible reasons why your monitor isn't displaying information so it's very important that you step through an ordered process like the one I've outlined here.

Important: If your computer is in fact showing information on the monitor, but is still not booting fully, see How to Troubleshoot a Computer That Won't Turn On for a better guide.

Time Required: From minutes to hours depending on why the computer isn't displaying anything on the monitor