Try disconnecting the hard drives and booting from the 10.5 install DVD. That would rule out a software problem. Zane On Fri, 16 Jan 2009, Andrew Kirkby wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi all ! > > My G5 bi-proc no longer wants to start up ! > I get the gong and the "cog-wheel" turning on the grey screen, so Mac > OS is trying something (10.5.x) ...but nothing further until it > shutsdown about 1 min later . > Tried "zapping the pram", tried resetting the PMU... and still no joy ! > Any ideas ? > > Andy > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.8 (Darwin) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iEYEARECAAYFAklw/ywACgkQBY+ESfWj+toUxACfT6J/uBvTXskDMw5MNojlfre2 > zKgAnjtDde1T6/ahDuDXTStU3KYKtK/R > =5PPX > -----END PGP SIGNATURE----- > > _______________________________________________ > G5 mailing list > G5 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g5 >