Hi I got two powermacs 7200 and 8200 (same as 7200 but different casing). And both have been stripped of their ram and video ram. When i start them up, nothing comes on screen. I have some ram from a powermac 4400. and a quick google search shows their both 168 Dimms but I can't get the ram to fit. And I don't want to force it. Can I assume that the ram types are somehow different? Can I start up these macs without vram?