yet another no boot no post message, but no answer in sight

hello, had perfectly fine 3.0 ht p4 with intel mobo that i took out of my main cpu to replace with amd 3200+ mobo and cpu. got new case and power supply, 450 volts. assembled everything, and no boot or bios beeps. removing memory results in the 3 no memory beeps. the system has the mobo plugged in, 256 mb ram (known good tested in another machine) and on board video. thats all i have plugged in now save the connectors for the power switch and the 4 pin p4 power connector. tried putting the power supply from working system into case, still same thing, power to mobo but no boot, no beep. i can hear everything but the processor making some noise when i power on.

it waqs the mobo, went to compusa and picked up a cheapo soho p4 mobo and everything boots fine with that. ill just send it back to intel for warrenty replacement.