Apple Mac Help – troubleshooting guides, tips and fixes
Tuesday, 26 November 2013 15:11

Error Beeps At Start Up

The chime you hear when you start up your mac is notification of sucessful completion of the power on self-test. This test runs whenever the computer is turned on after being fully shut down (the power-on self-test does not run if the computer is only restarted).
If a fault is detected during the test, you will not hear a normal startup chime. Instead, the system will beep. 

Published in Hardware Problems