HT201718 IMac is on white screen "Open Firmware" what shall I do now

well I have a genuine Mac Leopard OS X 10.6.7 installation disk and the iMac is stuck in grey screen and says  in panic: We are hanging here.I have been able to get to white scree in Open Firmware but that's about it. Holding the C key down doesn't start the installation disk.

Is your signature correct?
The A1076 is not able to run 10.6 - that OS is for Intel Macs. That model is a PowerPC G5.
You need the original install disks or a copy of 10.5 to install or fix that hardware.

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    Hi
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    Adelheid
    Fra: Jeff A Wright <[email protected]<mailto:[email protected]>>
    Svar til: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>
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