Thanks for all the replies gang, but my original gist was to find out , also, if the down voltages could be caused by a board problem or it the PS the culprit with the drives? At the moment I am running the original 512 DIMM and so far no more panics. The 256 modules are Spectek, bought together for a PC a while ago. The 512 is a Samsung. Joel On Feb 7, 2005, at 6:48 PM, Ronald Steinke wrote: > At 5:17 PM -0500 2/7/05, Joel Threatt wrote: >> After the little spinner on the grey screen came up, a dark >> background descended then a picture of the power button popped up >> with a message in a half languages that said I need to reboot my >> system and told me either to hold the power button for several >> seconds of hit the reset button. >> > > This is a kernel panic, also known as a System Crash. It appears to > have been caused by the RAM chips. Have you tried any different RAM > chips and had the same problems? > > If you test the board with different RAM chips and the problem > persists, then you have a board problem. If the problem cannot be > repeated with the different chips, then it points toward the RAM chips > as being the problem. > > Either way, you narrow the selection of causes and are closer to a > solution to the problem. > > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4 >