I'm refurbing a couple Power Macintoshs at work and one of thems giving me a bad picture kind of like the monitor cant handle the resolution. I've tried different monitors low resolutions, trading Vram with the other macs and swapping DIMM ram. When i leave all the Vram out and just try and use the on board Vram I get no picutre at all. Power Macs. Anyone got 5ki115 in it?