2007 iMac with OS X
Will not boot. Upon pressing power button it attempts to go through startup procedure then grey-screen and error message (You Need to restart your computer. Hold down the power button until it turns off, then press the power button again.)
I have come to understand this is called a "Kernel Panic"
I have been researching this issue all day. I cannot get it to safe boot by pressing the shift key. It does pull a progress bar but ultimately fails and returns to the kernel panic.
I have attempted to start from the CD to attempt utility disk, but I cannot get it to boot from CD. I have held the C key down. I have pressed it repeatedly. I have used it in combination with the alt/control/command keys. All have failed.
If anyone has any idea what might can be done I thank you in advance for your assistance.