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  1. #1
    Freezing and beeping!

    Member Since
    Aug 28, 2010
    Posts
    79
    Freezing and beeping!
    recently my Mac has started to freeze on me and beep very loudly in groups of three. This has not happened in the months before OS X was installed, now it seems that since August maybe once or twice a week it ffreezes, the whole PC locks up, screen still on and it beeps loudly 3 times "BEEP! BEEP! BEEP!"
    then a pause, then another 3: "BEEP! BEEP! BEEP!"...and so on until I hold the rear switch down for 3 seconds to power down.
    What do these beeps mean? Why have they started happening?
    How can I prevent it?

  2. #2
    Freezing and beeping!
    osxx's Avatar
    Member Since
    Jan 19, 2008
    Location
    houston texas
    Posts
    4,695
    Specs:
    09 MBP 8GB ram 500GB HD OS 10.9 32B iPad 4 32GB iPhone 5 iOs7 2TB TC Apple TV3
    3 beeps usually means the ram is bad but it could also be the ram socket as in bad motherboard best to take it in and let an authorized Apple dealer diagnose.

  3. #3
    Freezing and beeping!

    Member Since
    Aug 28, 2010
    Posts
    79
    Thanks - I fitted an extra 4gig of ram from a reputable mfr source, so will just check it's seated firmly.

  4. #4
    Freezing and beeping!
    osxx's Avatar
    Member Since
    Jan 19, 2008
    Location
    houston texas
    Posts
    4,695
    Specs:
    09 MBP 8GB ram 500GB HD OS 10.9 32B iPad 4 32GB iPhone 5 iOs7 2TB TC Apple TV3
    Quote Originally Posted by Flat Eric View Post
    Thanks - I fitted an extra 4gig of ram from a reputable mfr source, so will just check it's seated firmly.
    You can also remove one stick at a time and boot back up to determine which is not working if reseating does not work the odds of having 2 bad sticks does not usually happen.

  5. #5
    Freezing and beeping!
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,212
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    Quote Originally Posted by Flat Eric View Post
    Thanks - I fitted an extra 4gig of ram from a reputable mfr source, so will just check it's seated firmly.
    Is your machine an iMac? The newer iMacs have very tight fitting memory slots. It takes considerable downward pressure to seat the modules properly.

  6. #6
    Freezing and beeping!

    Member Since
    Aug 28, 2010
    Posts
    79
    it is October 2010 - is that new? Problem with intermittent faults like this, how long do u wait around for it to do it again? May be an evening, may be another week...

  7. #7
    Freezing and beeping!
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,212
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    It's best to pop the modules out of the socket and re-seat them. As I stated, the late model iMacs (yours included) have very tight fitting memory slots. You have to push down on the modules with moderate force. You should hear or feel a slight click, however, the module is probably still not seated right. Keep pushing down with moderate force until you hear or feel a second click.

    You can tell if they're seated by comparing them to the top slots. All four modules should line up perfectly like soldiers marching.

  8. #8
    Freezing and beeping!
    chas_m's Avatar
    Member Since
    Jan 22, 2010
    Location
    Victoria, BC
    Posts
    18,940
    Specs:
    Mid-2012 MBP (16GB, 1TB HD), Monoprice 24-inch second monitor, iPhone 5s 32GB, iPad Air 2 64GB
    Also, despite buying from a reputable source it is ENTIRELY possible to simply have a bad stick of RAM. Like all other mass-manufactured products, the occasional "lemon" gets past QC and into the hands of consumers.

    If following chscag's excellent advice doesn't work, I'd strongly suspect that one of the sticks is simply defective. Try to determine which one by booting up with one stick at a time till you find it, contact the seller, arrange for an exchange.

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