It could be a fan going bad - and it will only get worst - so look around and find a replacement for it and if that doesn't solve the problem wel it's most likely the drive --- Pat Crowe <crowesnest at aapt.net.au> wrote: > When my G4 is first switched on, it is reasonably > quiet but after 20 > or 30 minutes the noise level has risen > considerably. I understand > that two 7200rpm HDs are going to make some noise > and I am assuming > this is the noise I hear when first starting. > If the extra noise is being generated by the cooling > fans, can I > assume these cooling fans are driven by demand? ie. > as the > temperature climbs, the fans start and then increase > speed as required? > I note that the air exhausting from the CPU is not > even warm. > Jessamine. > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4 > > Listmom is trying to clean out his closets! Vintage > Mac and random stuff: > http://search.ebay.com/_W0QQsassZmacguy1984 >