computer start up issues... Need Help

I have been having difficulties starting my computer. Every time I push the power button the computer turns on but doesn't fully boot. The monitor stays off, there's no power light on the power button, and Im unable to turn it off with the power button, I have to use the main power switch in the back. I was wondering if anyone has any ideas about what is going on. Any help would be greatly appreciated

Just the light is off I can hear the fans inside the computer.

Mine was doing the same thing other day, turned it on, fans came on but nothing else and wouldn't turn off unless I hit the main power switch in the back. My problem was the motherboard itself..I've since replaced it with a new motherboard and everything's fine...I hope that isn't your problem, but your situation sounds so much like what I just had...

Try making sure everything that goes into a slot on the motherboard is firmly seated. Removing and putting the video card and memory back in might get you back in business. If you do this, start by removing the power cord and just take your time and try not to force anything into a slot - look and make sure it is lined up correctly before you apply too much pressure.

EM