The power supply should be fine. Reseat all of the connections, bot hte PCI-e slot and the power slots on the cards.
Change your ram back to the original ram.
Are the cards new or second hand?
Ok, I will try this tonight after work. Thanks for the reply!
One video card I bought new about a year ago, but apparently they stopped making these cards. So I bought my most recent one slightly used. But it's from a reputable seller, do you think that is the issue?
Thanks again dude, I appreciate it.