4550 Views 5 Replies Latest reply: Aug 20, 2010 4:12 PM by Ron6962
As I said, it does not look good. If you are not able to boot from the Hard Disk Drive, or boot into Safe or Single User Mode, nor from the optical drive it is difficult to run any kind of diagnostics. The only mode that you have not yet tried is booting via firewire, either from a bootable volume on an external firewire drive connected to the computer holding down the Option key to startup or via Firewire Target Disk Mode with the assistance of a second firewire Mac.
The other option is to make an appointment at your nearest Genius Bar and have them take a look. There is no charge for looking or on the spot repairs they make and they will give you an idea of what is wrong and what it will cost to have it fixed.
Here's a link to the prohibitory sign:
I can sympathize, since I have the exact same problem with a PowerMacG4 MDD. I think the original problem started with a failing hard drive, but now the keyboard no longer works so it can't see any keyboard commands.
The genius bar has a store feed they can use to boot the computer and run a hardware test. That would probably be a good thing to do to find out what is really wrong. That's what I plan to do with the PowerMac if I can't get it going again.
It might not hurt to try reseating the RAM. Didn't help me, but it's probably worth a try.