Greetings Tony, ( + )!( + ) If you are just interested in finding out if the Power Supply is working and that power is getting to the mother board, then just turn the platform on and let it run for about an hour, then start touching the top of the IC's and if they are warm to hot the PS is putting out voltage to the MB. The "Bong" that a Mac makes when starting-up is an indication that the processor has tested installed memory and it has passed the test. The memory modules that you have DDR 184 pin PC3200 should work but they may not be the fastest that your machine can handle. I understand that if you are coming from the WINTEL world about the high failure rate of the boxes that are made to run MicroJunk. However Mac's are all made by Apple and have a much lower mortality. If all that you want to do is see if the box will run then you can purchase a DDR 184 pin Memory RAM for Apple Power Mac G5 1.6Ghz memory module for about $7.00 plus shipping on eBay and a 80Gb SATA Hard Drive for less than $20.00. You can always you the Hard Drive in one of your WINTEL platforms. If you have a Firewire enclosure equipped with a drive you can connect that to your G5 because it is capable of booting from a Firewire drive. And lastly you'll need a OS X DVD with an operating system. Best regards, Harry ø?ºº?ø,¸¸,ø?ºº?ø,¸¸,ø?ºº?ø,¸¸,ø?º?ø On Nov 7, 2008, at 3:00 AM, Tony Sheeley wrote: > Hello O'Brien, > > But here's more. > > There are four slots for memory modules. These slots are located > beneath the double fan assembly and the banks are separated by quite > a bit of space. I have no way of telling which bank is which. Each > bank as two slots labelled 1 & 2, and to places where it looks like > further slots could be installed labelled 3 & 4. I have two 1 GB > sticks of 184 pin DDR PC3200 memory. If this will work in the Mac, > how should I install it? In the top or bottom bank? One stick in > slot 1 of each of the banks? One in slot 1 of one bank, and one in > slot two of the other? I've tried several combinations, but still > nothing. > > Sorry for all the questions. Yes, I am still fairly new to Macs.