Q: My iMac running 10.8.2 in sleep mode was repeating three beeping sounds and was unresponsive. I had to pull the power cord to rest ... My iMac running 10.8.2 in sleep mode was repeating three beeping sounds and was unresponsive. I had to pull the power cord to restart. Now it appears fine. Anyone know what the three beeps means? more
-
All replies
-
Helpful answers
-
Feb 7, 2015 6:28 AM in response to jrjr729by Mike Sombrio,3 beeps generally indicates a ram problem. Mac computers: About startup tones - Apple Support
3 successive tones, a 5 second pause (repeating): This indicates RAM does not pass a data integrity check.
You say your iMac was beeping during sleep? Have never heard that before. Try removing and reseating the ram.
Reset the PRAM How to Reset NVRAM on your Mac - Apple Support
You might also consider running The Apple Hardware Test OS X Mountain Lion: Use Apple Diagnostics or Apple Hardware Test
You should also update your OS X About the OS X Mountain Lion v10.8.5 Update - Apple Support
Finally you don't use Chrome do you? There have been reports of beeping while using Chrome, don't know why.