The scariest thing that can happen to your computer is failure to turn on at all. You press the little power button and nothing happens. No beeps, clicks, clunks or whirs. The monitor is on, but your computer is totally dead.
First of all- don’t panic! When people face that kind of problem, they tend to panic, worried that all important data on their PC or MAC are gone. Most likely your documents and pictures are safe, just not accessible at the moment. This computer problem shows that one of the hardware components have failed.