Q: 21" iMac 2010 with el capitan making buzzing sound and not starting
i have a 2010 21" iMac running EL capitan that today suddenly made a buzzing sound and it wouldn't do anything so i turned it off and i have tried to put it back on and it is still making a buzzing sound, as soon as i press the power bottom at the back it buzzes 3 times then stops and 3 buzzes stops.... on a black screen. Any advice thanks
iMac (27-inch Mid 2011), Mac OS X (10.7.5)
Posted on Apr 12, 2016 11:59 AM
Three beeps generally indicate a problem with the RAM.
see > About Mac computer startup tones - Apple Support
Sometimes modules get loose and sometimes modules go bad. Personally I would check and/or replace the RAM modules.
If you can not or do not know how to install or check the RAM yourself...? Then you will need to contact your local Apple Store or AASP and make a service appointment. see > https://locate.apple.com/country
Posted on Apr 13, 2016 7:28 AM