"As Insane Hardware reported yesterday, ELSA has been experiencing a few issues with some mainboards with their GLADIAC series of video cards. Unfortunately they are not the only manufacturer. The guys have also heard of some Asus cards doing the same thing aswell! They have been doing a bit of research and found out what the scoop is with this. As if the IronGate fiasco wasn't enough already for NVIDIA! Some NVIDIA GeForce2 GTS Cards based on the Reference Design using the specified components by NVIDIA (in no way deviating from the R-D card) have problems whereby it will not "post" and display nothing on a cold boot. The problem is caused by an incompatibility between the card's power unit (usually top left hand side of the card) and a PWM (Pulse Width Modulation) Circuit on the mainboard. They guys even have a list of know mainboards that exhibit this problem. Head on down there for some more info and let them know about your experiences with this incompatibility issue."
FULL STORY @ INSANEHARDWARE (http://www.insanehardware.com/articles/nvidiacompatible.htm)