My eMac G4, 56G, 3.3, Power, 512mgRAM, wouldn't boot yesterday. I came here to find a solution and found this info:
This helped meRe: I'm having problem at startup with my emac
Dec 23, 2012 10:34 AM (in response to filgisher)
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
I had run the PRAM reboot with no help. Then I did the Safe Boot, Utility Permissions check/repair, UP check/repair Disk (just for insurance as it was not mentioned in the above instructions) and when I rebooted it came up just fine. What a relief, however, I'd like to find out what caused the problem to begin with.
I'd been having trouble with FireFox so had opened a long neglected Thunderbird Mail App and discovered I had 257 emails in my In Box. Could this have been the problem?
I'm going to do the Check described in the second section of the above instructions just to see what it offers. Any Input on the TB app is appreciated.