I have 2 plugged into the MOBO and one on a powered riser, the MOBO has a slot to plug in an extra cable for extra power to the PCI slots, so it should be able to handle 2 cards plugged in no problem, and with the powered riser on the other card, it should be able to handle all 3.

Thanks guys for the suggestions and comments, I am pretty sure it is the power supply which was the culprit, although I am still not sure why as I do not believe I exceeded the max load of it, perhaps just got a crappy one.  I am going to try to get a refund for it from newegg, and get one that has a higher watt rating and go from there.