P4P800 + 9700 AGP + 9200 PCI => No boot

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

I have a P4P800 with P4 3 GHz and dual 512 =>1024 MB RAM
and ATI 9700 pro AGP card and a Creative Audigy 2 in PCI slot 4
and additional network card in PCI slot 5.
This works like a charm with W XP pro
I do not use any overclocking

As soon as I add an ATI 9200 PCI video card the system will
no longer boot, not even produce any POST beeps :-((

Any clues to solve this ???

See you, Jan