I've been after one of these plug in Nvidia Geforce Go 6600 PCIE 128mb video cards, same slot type as the memory cards, for a good few months now. Similar initial symptoms as yourself and finally no video at all. Seems it's fairly common problem with this Z71 motherboard and 6600 video card, it overheats and goes belly up. Asus don't have them, none on ebay, nothing to be found anywhere. I think its one of those sweep it all under the carpet corporate responses to a common problem. A pity because the Z7100VP is/was the best laptop I've had since 1997. If you ever find one of these Nvidia Geforce Go 6600 PCIE 128mb cards please let me know and I'll get one myself.