The computer makes an unusual sound at startup.

mIf you hear four tones, start up the computer with the Disk Tools disk that came with your computer. If the computer does not start up, or if the hard disk icon does not appear, the hard disk may need repair. Contact an Apple-authorized service provider or call the Apple Assistance Center. If the hard disk icon does appear, see Chapter 8.

mThere may be a problem with the information stored in the area called parameter RAM (PRAM). Reset the PRAM (also called “zapping the PRAM”).

Resetting the PRAM erases the contents of your RAM disk, if you have one. Resetting the PRAM also restores the default settings in most control panels. After you reset the PRAM, be sure to check any custom settings you made for the desktop pattern, memory, network, AppleTalk, trackpad, power conservation, and so forth. Resetting the PRAM also resets the power manager.

Follow these steps to reset the PRAM:

1.Locate the keys Command (x), Option, P, and R.

2.Make sure the Caps Lock key is not down.

3.Restart your Macintosh. Immediately after hearing the startup sound, press the Command (x), Option, P, and R keys simultaneously.

If you don’t hold down the key combination within 5–10 seconds after you restart, you may need to repeat steps 1–3.

4.Hold down the keys until you hear the startup sound repeat itself three times. Then release the keys.

5.If the computer shuts itself off, press the Power key to turn it back on.

6.When the computer has finished starting up, restore any custom control panel and network settings.

Tips and Troubleshooting

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Apple 5300 Series manual Computer makes an unusual sound at startup