Hey I just got my PC x1900 and THE COMPUTER wont turn on with the power cord plugged in! I'm using a two 4-pin molex -> 6 pin PCIe adapter, and with both plugged in, the power just blinks and turns off. With 1 plugged in, the card doesn't work, not even under windows. I'm freakin! Obviously it's drawing too much power with both plugged in. Does it really require 2? More info: It's a saphire 512MB open box from newegg.com. The power is coming entirely from the optical drive bay which has a hard drive and optical drive plugged in already.