So a friend gave me a set of 2.7GHz G5 cards to put in my G5, which I did. Once I did, the machine refused to boot and I blamed it on the processor pulling too much power. Well, I tore the machine back apart to reinstall the original 2.0s and noticed there was this crater/dent/chip/hole on the die it's self. Not the card, the die. I was wondering what might cause this and could this have been the reason my G5 wouldn't boot from them? Thanks!