There are many reasons that a mac wont start up but when you find yourself in this situation there are a couple of basic steps that can be taken before you have to think the worst and rush your mac into us. If you dont have a back up and have important data then please call us first.
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.
macmasters - 20 Highfield Walk, Yaxley PE7 3ET - 01733 700752