Apple IMAC User Manual - Page 312
Problems Starting Up, Problems, Computer won’t start up, restart, or shut down
UPC - 067540444435
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CHAPTER 1 Problems Starting Up 1 Problems Computer won't start up, restart, or shut down Computer won't start up. Try these solutions: m Make sure your computer is getting power. (p. 13) m Force your computer to restart. (p. 12) m Increase the memory available for system software. (p. 15) m Make sure memory is installed correctly. (p. 20) m Replace the computer's backup battery. (p. 20) Unusual sound occurs when you try to start up the computer. Try these solutions: m Make sure external devices are properly connected and turned on. (p. 14) m Make sure memory is installed correctly. (p. 20) m Test and repair the hard disk directory. (p. 21) Computer won't restart. Try these solutions: m Make sure your computer is getting power. (p. 13) m Quit open applications. (p. 13) m Make sure you're using the correct disk as a startup disk. (p. 16) m Resolve system extension conflicts. (p. 17) m Force your computer to restart. (p. 12) m Reset the PRAM. (p. 19) 7