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. ![]() 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". 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. My friend did not have the password to get into the machine and no original system disc. If your Mac is sounding 3 successive beeps with a five second pause in between, it means the RAM in your computer has not passed the data integrity test run at startup. MacBook Pro MacBook Air & MacBook iMac & iMac Pro Mac Pro Mac mini iPad & iPad Pro. They were given the computer by someone who didn't want it. MacBook Pro MacBook Air MacBook Portable Powerbanks Apple & Macs. ![]() I'm working on a Macbook pro 15 A1278 for a friend.
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