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Macbook pro 3 beeps screen flashing
Macbook pro 3 beeps screen flashing












System install was a success and was able to restart machine B successfully from the hard drive of the faulty machine. Did a clean system install from machine B (while still in target disk mode). Hard drive checks out with no errors and is formatted in Extended Journaled. Fired the machine up as a target disk and ran disk utility via remote control from another machine, we''ll call that one 'machine B'. DVD spins up but then three beeps.įired the machine up as a target disk and ran disk utility via remote control from another machine, we''ll call that one "machine B". Attempting to restart using the system DVD by holding the C key, same problem. Bought new ram, put it in, reseated it a bunch of times, still three beeps every time.Īttempting to restart using the system DVD by holding the C key, same problem. Computer starts with normal chimes, then when it gets to the grey screen with the Apple, I get the "three beeps". Now I can't get as far as the password screen any more. So I attempted to boot from my own Snow Leopard DVD, then I started getting three beep errors. I thought this was going to be an easy case of erase-and-install. However, if it blinks 5 times and pauses, then the battery might need diagnostics or replacing.

macbook pro 3 beeps screen flashing

If it beeps 3 times, it's also an indication of bad ram.

macbook pro 3 beeps screen flashing

If it's blinking 3 times then pause, then 3 times again then it's an indication of a bad RAM. My friend did not have the password to get into the machine and no original system disc. You need to let us know how many times the light blinks, because they are diagnostic indicators. They were given the computer by someone who didn't want it. I'm working on a Macbook pro 15 A1278 for a friend.














Macbook pro 3 beeps screen flashing