Help ? New Upgrade

[Nuguy]

I just changed my mb. to Asus PT4 w/ P4 1.9 & 256 RDRAM. Previously all component were working great. Everything looks to be install correctly. When I turn on the system everthing gets power but does not boot up. Monitor has black screen w/ "Signal not Connected" I have tried two different graphic cards, still same situation. Any clues to what is going on. Any help would be appreciated.

 

[mothman]

More info would help.
What did you upgrade from?
Do you have a P4 rated power supply?

If there is no bad hardware- ie cpu or mb then
Start from scratch.
Take it apart, just put in a vid card, memory & floppy.
See if you can boot from a DOS disk.

Then add items one at a time- HD, CD, etc.