View Full Version : iMac G3 400Mhz Black Screen at Startup

Nov 18, 2004, 06:56 PM
I have an old graphite iMac that was running OS 8.6. I decided to try to install Panther on it. I booted the install cd and ran the installer. The installer told me that a firmware upgrade was needed and to reboot after the upgrade. Well, I ejected the CD and rebooted the iMac. Now the screen is black. The hard drive appears to boot then after about 2 minutes shuts down. I have tried plugging an external monitor into the VGA output, and the external monitor does receive a signal... but its just a white screen. I don't know what else to do! I've never had a problem with it before ;(

Nov 18, 2004, 07:17 PM
The firmware update that you require, unfortunately, can only be run under OS 9. It's a bit daft, but it's a common problem with G3 iMacs. Boot it up in 9, download the firmware update, run it, then reinstall Panther. It should run just fine after that.

Nov 18, 2004, 07:21 PM
Thats the problem the screen is black, and the hard drive has 8.6 on it. I can't see what I'm doing.

Nov 18, 2004, 08:17 PM
If I remove the iMac's hard drive and somehow get 9.2 installed on the drive. And, if the iMac boots will I be able to see OS 9 on an external display?

Nov 18, 2004, 08:37 PM
If you boot from the OS9 disk, the display should come back. Or, you could install OS9 on the hard drive from another machine, then put it into the iMac.