Tkmkbod

Q: IMac beeping at start up

MY iMac will not stop beeping at startup any help would be great.

iMac (21.5-inch Mid 2011), OS X Yosemite (10.10.4)

Posted on Sep 20, 2015 9:50 AM

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Q: IMac beeping at start up

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  • by Old Toad,

    Old Toad Old Toad Sep 20, 2015 10:55 AM in response to Tkmkbod
    Level 10 (141,311 points)
    Mac OS X
    Sep 20, 2015 10:55 AM in response to Tkmkbod

    How many chimes are you getting?  The following is from this Apple doucment: Mac computers: About startup tones - Apple Support

    Mac computers: About startup tones

     

    Learn about the different sounds your computer makes when it starts up and what they mean.

    Mac computers can produce several sounds when starting up. Your Mac should produce the familiar single tone on start up. If you hear another tone it can indicate problems with your computer.

    • 1 tone, repeating every 5 seconds: This indicates no RAM is installed.
    • 3 successive tones, a 5 second pause (repeating): This indicates RAM does not pass a data integrity check.
    • 1 long tone while holding down the power button: Indicates an EFI ROM update is in progress on a computer manufactured before 2012.
    • 3 long tones, 3 short tones, 3 long tones: Indicates EFI ROM corruption is detected and the computer is in EFI ROM recovery mode.

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