RAM does age and as it ages the timing etc begins to drift. Eventually it can drift far enough that it becomes marginal or even out of spec. This happens even with the Apple branded RAM that comes in Macs from the factory. I have had third party DIMMs that were dead or unusable on arrival. But, the only DIMM that has ever failed me in service was an Apple branded DIMM that was installed by Apple at the factory. So your problem may be caused by a RAM problem even though "The machine has nothing new attached, the same way it came out the box 6 years ago."MacMessiah said:The machine has nothing new attached, the same way it came out the box 6 years ago.
The original Hard Drive has Mac OS X as well, but it wasn't allowing me to upgrade it to 10.3.9 to resolve a Video Driver issue.