Try the RAM in different slots, too. Sometimes the slots themselves can stop working right. The main thing is to experiment with only one stick of RAM at a time to narrow things down. -- Rich Eric Buczynski wrote: > If you can't boot up at all to get to the System Profiler, simply remove > all the sticks of RAM. Then take one stick and put it in the RAM slot, > and boot it up. If it boots up correctly, that RAM is good. Power it > down, take out that RAM stick, put in another, boot up, etc. Eventually > you'll find the offending RAM module. > > Eric Buczynski > > > On Jan 28, 2007, at 2:56 AM, g4-request at listserver.themacintoshguy.com > wrote: > >> ubject: Re: [G4] G4 will not boot up after addung a 128 HD >> To: "A place to discuss Apple's G4 computers." >> <g4 at listserver.themacintoshguy.com> >> Message-ID: >> <944d273d0701272355k1f2b5ceib84eccb177f67661 at mail.gmail.com> >> Content-Type: text/plain; charset="iso-8859-1" >> >> It means the RAM in slot 3/J24 is malfunctioning, more info about you mac >> world help... "G4" could be anything from Power Mac G4 PCI Graphics to >> Mac >> Mini G4. >> >> -brett