I'm guessing hardware, because it's not asking to boot from one of the other disks with operating systems.
On the default disk, the Mac is running Was that Leopard, or Snow Leopard? Another disk has Lion. Can't believe it's been three-and-a-half years since I last visited these forums. Worse, I've hardly touched my MacPro in that time. It has seen consistent but only occasional use. What a crime! TZ, UncleMac, other names I'll remember soon, you still out there?
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I had forgotten my username, but I remembered some posts, so I searched for them, recognized myself, updated my password, and here I am again. Amazing how strong the memories are of these forums. Update: Power Supply I tried once again plugging the Mac directly into the wall, bypassing the power supply.
Started immediately, and booted normally. To confirm that this was the problem, I then shut down, and moved the power cord back to the power supply. Again, booted normally!
So, whatever is happening is intermittent. Could still be an intermittent problem with the power supply, or does it sound like something else? The power supply is one of the big APCs made for hungry towers, but it is old. Is it typical for them to behave inconsistently while dying?
Any UPS can behave in almost any fashion when the batteries start getting some age. I am naturally very jealous for the rights and liberties of my country, and the least encroachment of those invaluable privileges is apt to make my blood boil. Join Date Feb Location on the landline, Mr. Smith Posts 7, Welcome back. Mostly UPSes behave when the batteries are shot So much for "uninterruptible". I would run it from the wall for a while and see if the issue ever comes back.
This happens to us all the time with computers, and nobody thinks of complaining. My UPS quirk I've had a issue over the past year or two about once a month or every other month When I press the "power on" button to my iMac I get nothing. Pressing the power again in anyway does nothing. So then I'll plug it into the wall it boots up fine.
All your hard drive data should be fine. Please tell us why you think the logic board has gone bad. What tests did Apple do? Did you actually see them do it. Was it an actual Apple store or an Authorized Service Provider? I have the original software disc. My logic board is A So if i switch board, start up the machine it ask for software installation disc and my data will still be intact? I don't know where you're getting the A Please give the last three letters of your serial number.
Help Translate iFixit. Back Answers Index. Simon Rep: 13 1. Yosemite or El Capitan? View the answer I have this problem too Subscribed to new answers. Is this a good question? Yes No. Voted Undo. Score 3.
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Android Fix Kits. A new screen or battery is one kit away. Chosen Solution. Dan danj Rep: Not sure I have a good answer here for you. There are two different directions one can take here: The first is to strip the case down and do a reverse hackintosh. This is were you put in an off the shelf logic board and rebuild the system that way. The second way is to locate a newer generation of the Mac Pro logic board and the other needed parts, again gutting your case and mount it in. Was this answer helpful?
Mac Pro (Early 2008) - Technical Specifications
Score 6. Think it would be possible to put a Mac pro motherboard in a regular case? Most Helpful Answer. The answer is Score 9. Le Partisan Lab lepartisan Rep: 1 1. Posted: May 10 Options Permalink History. Hi, Can someone help me?
I decided to get a new logic board and a new power source. The power is new and the logic came with the variant of being Please help! This is the las SS i got when it still worked. Score 0.
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