Comment Solution to broken intel iMacs (Score 3, Informative) 288
It seems that Dave Schroeder has posted the following instructions over at Nakfull Propaganda to fix those broken intel iMacs;
By following these steps, the iMacs that had difficulty with certain EFI modules appear to have been restored to a functioning state:
1. Disconnect the internal hard disk
2. Disconnect the iMac from AC power
3. Plug in AC while holding the power button
4. Power up the iMac and zap NVRAM (cmd-opt-P-R)
The hard disk can be reformatted and the operating system restored.