Monitor not displaying anything

[providox]

My computer isn’t working, when I cut on the switch the computer powers on but nothing shows up on the monitor, its receiving power but the monitor light stays orange.

Here’s the things I’ve done so far:

Changed power supply
Unplugged cables, memory, cpu, cards, and reinstalled them
Changed memory
Changed IDE and power cables
Changed Monitor
Changed hard drive
Reset CMOS
Switched from onboard Video adapter to AGP Video Card
Changed Motherboard
Changed CPU

I’ve done all these things and still nothing, The computer powers up fully, cpu/psu fans spin, front panel light is green, yet the monitor still isn’t displaying anything

 

[ski]

Are all of the components that you installed as replacements known to work?

 

[ScarletStrife]

I'm having the same problem at the moment. Put everything from my computer back together after installing a few new hardware components and information is now not going from the tower to the monitor. [No Video] is the only thing the monitor will display at the moment.

I thought my video card might of gave out, so I tried the monitor cable on the default MB monitor slot, but there was no response there either.

So any information in why it might have done this, let me know.

 

[ski]

The monitor may be bad. See if it works on another system.

 

[ScarletStrife]

After I posted this I thought that might of been the case. So I plugged the Monitor cable into the back of my laptop and switched over to that screen. Well, the monitor came up, but everything was tinted a light blue. So first thought, hey maybe both inboard and my other video card is dead. So ordered a new video card last night, got it in today. But no solution there, same response of zero as the other one. So I'm pondering right now as in what could be going on with it.

 

[ski]

Make sure that all connections are secure, and all cards are firmly seated.
If no luck, then do a barebones setup by installing only the power supply, MB, CPU, RAM, video card, monitor, and KB, and set the MB on a piece of cardboard outside of the case.
If still no good, then set the MB on a piece of cardboard outside the case. If that works, then the MB is shorting out in the case. Check for any loose metal objects under the MB, and if any metal standoffs are contacting the MB's printed circuits. If it's the latter, then install manila washers between the standoffs/screws and the MB.
If the barebones with the MB on cardboard does not work, then install each RAM module one at a time in each slot. If no luck, then run Memtest86 to test the RAM.
If that does not fix the problem, then the MB may be bad.