Disturbing Computer Problem...HELP!

[Rudager]

My compter turns on but does not bootup...there is no boot sound or any display at all

Things that Ive done to try and fix:
1)Turned out PSU was bad...have replaced that
2)Switched CPUs
3)Switched out Ram modules
4Tryed each video card...one at a time
5)Tryed with just CPU, RAM, and mobo
6)Tryed with out soundblaster card
7)Switched motherboards
8)cleared the CMOS
9)Pluged in my old CPU Heatsink Fan while booting

Still nothing happens...the fans run...the lights in my case turn on...the Power LED lights up...the DVD player ejects...the HD lights turn on for a second or two and then turn off

WTF is going ON! HELP! This makes no sense whatsoever

 

[Pr3z]

Monitor dead?

Try with no CD DVD roms attached?

NO USB devices attached..

 

[Rudager]

Monitor dead?

Try with no CD DVD roms attached?

NO USB devices attached..

I have...the same thing happens...and my monitors fine...man this sucks

 

[Duster]

have you made sure that everything works? Not that it just doesn't boot commputer when it is switched out

Might be 2 diff problems so when you switch stuff it not doing the trick

I would start each thihng and make sure to check and make sure everything works