Hey my firnd has a hp 4550z and he has 2 sticks of 32 megs in there. He just purchased a 128 kingston stick and the thing wont boot. Does he have to run like 2 64's to get 128 or whats wrong? If he tries just teh 128 the pc boots but no video. If he tried 128 and a 32 the pc gets some error. Error 29 or something. I need help fast!