Computer won't power up. Replaced power supply and motherboard

Could be a dead CPU or a Dead Hard drive

I'm pretty sure its not a dead hard drive. When I press the power button everything "flickers" for a second like its trying to turn on then nothing happens. The green light on the power supply lights up before I power it on but as soon as I hit the main power button it goes out and stays out. If I unplug it from the wall and wait 30-45 seconds then plug it back in then the light comes back on but does the same thing again as soon as I hit the power button.

Also I have completely unplugged and removed everything from the motherboard. The only things attached to the motherboard is the cpu and heatsink, the RAM, and then the power supply and it still does the same thing even when I trip the main power with a screwdriver. Also fyi this was after I pulled the motherboard out of the case.

It could be that your motherboard has short circuited when you pulled it out of the case. Check your motherboard to see if a green light is on. If not, then try reinstalling the ram, reinstall the CPU, and if it still doesn't work, then it is definitely a short circuit

Can you please explain what is displayer on your monitor as soon as you press the power button. And what is happening in side the case (fans spinning, what light a flickering).

There is nothing displayed on the monitor. Basically as soon as I hit the power button, the computer dies. The power button doesn't light up, and the fans basically wiggle slightly like they had power to them for a millisecond. It acts like it tries to power up for less than a second and dies. This is when the light on the power supply turns off too. After this happens the computer won't do anything at all, like it has no power coming to it. If I unplug it from the wall for roughly a minute and then plug it back in, the power supply light will turn back on and if I hit the power button then it does the same thing I described above.

My best guess is the CPU has died.

Could there be any other problems besides the cpu? Is there anyway to test and see if the cpu has died?

Place is it another motherboard that is compatible with the CPU. See how it functions. Another thing you could do is place the motherboard (with CPU) in another computer, everything other than the motherboard and CPU should be different (power supply). Even use a different brand power supply. Could I also see some pictures of you build before you press the power button and after?

Well I replaced the CPU and it is still doing the same thing. Beginning to get quite disheartened about the whole thing and I am ready to just take it to the local computer repair place to let them deal with it. I will post some pictures of the build and a short youtube clip of the fan when I press the power button for any that is still interested in it.

Here is the inages of the power supply indicator light before and after I press the power button.

Before: http://imageshack.us/a/img401/6724/imag0286u.jpg

After: http://imageshack.us/a/img189/3775/imag0287el.jpg

Note that the power light stays off after I press the power button until I unplug the 24-pin plug from the motherboard and then comes right back on as soon as I plug it back in. Unplugging the power supply from the wall has no effect.

And here is a Youtube clip of the fan when I push the power button:

http://youtu.be/egQ63XrJBBo

I can post more pictures of the build if needed.

I am wondering if you ever found a solution to the problem. My HP dv6 is doing the same thing, I have replaced the motherboard and still not powering up. Please let me know, Sincerely Frustrated!!