Mac Pro 3,1 suddenly won't turn on. Clicks then nothing

Discussion in 'Mac Pro' started by emjayen84, Feb 22, 2012.

  1. emjayen84, Feb 22, 2012
    Last edited: Feb 22, 2012

    emjayen84 macrumors newbie

    Feb 18, 2012
    I just installed a Radeon 5770 in my Mac Pro 3,1 and didn't have 10.6.5 installed like it required, but it still turned on fine, was quiet, checked stats, RPM, temp, everything was fine for about 4 days - til today, I got the Snow Leopard disk in the mail, popped it in, went to restart, so I could install it (which, because of the driver issue, wouldn't) that's why I was installing the disk, to get 10.6.5 update. Anyway, I hold down the power button to shut it off, since it wouldn't restart -- now, it just makes a click, sometimes another click after about 5 seconds, then nothing happens. I re-plugged it into different outlets and nothing. I remember tha when i first installed the card, everytime i turned the mac on, it took about a second to actually turn on after it clicked. Is this a power supply issue? I don't get it, everything was running fine. The 5770 not running on 10.6.5 wouldn't do this, would it? I'm worried that it may be fried. Can anyone enlighten me here? It doesn't always make the click, but usually, if i re-plug it in. I also barely hear a sound like something's trying to make a connection, electrically. Ugh. Any help would be greatly appreciated.


    EDIT: Now, it seems to turn on fine?! all red lights blink once in unison on RAM board, as usual. All I did, was unplug the mac again, and hit power? It may seem like a hasty original post, but I'm still concerned that it could become a serious problem in the future. What can I do to make sure this doesn't happen again, or worse, permanently?
  2. throAU macrumors 601


    Feb 13, 2012
    Perth, Western Australia
    I'd double check that the car is seated properly. Its possible you jiggled it slightly when unplugging/plugging in the mac.
  3. emjayen84 thread starter macrumors newbie

    Feb 18, 2012

    im always very careful with unplugging and i checked, its firmly seated so it is just a mystery to me.
  4. Wardenski macrumors 6502

    Jan 22, 2012
    Perhaps by unplugging everything you reset the SMC and brought your Mac back to life. Those clicks are just the powersupply, if you could not boot properly then you will use hardly any power. I had a few more clicks than usual during the time when my 8800GT died.

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