Computer won't start

Hello,

I fear I have a hardware problem somewhere, can someone give me some
hints on how to locate the root cause?

The computer is getting power as the fan is blowing normal and the
keyboard lights (caps-lock, num-lock and scroll-lock) blink once when I
press the power button.

Then it all stops, well... the fan continue to blows but nothing else
happens. This is before the bios screens come up when you initially
start your computer.

The monitor turns itself off saying it does not receive a signal, the
keyboard is not responding to anything (normally, num-lock would show
the light on/off) and my optical mouse is not showing the red lights it
normally does.

I've let it run for a while, but the state does not change.... it's
broken :s

Any ideas what might be causing?

Thanks,
twomt