Hi folks, I'm new to Mac's and i have acquired an old Power Mac G5. When i got it i had to fit a new HDD and memory. I've installed 2Gb of PC3200 DDR and a Seagate Barracuda 250Gb HD (i have limited the datarate to 150MB with jumper settings). When i boot the Mac, all i get is a grey screen with a Folder which changes between a Mac icon and a question mark. I have tried booting from the original OSX 10.4 disc by holding down the "C" key on start up, but it just does the same. Can anyone shed any light on this? I'm pulling my hair out. I take it the folder means that it can't see the HDD? Thanks, Brian.