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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

iMac - My iMac won't start up :(


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puggle_205

 
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Hi,

My iMac won't start up. When I turn it on, it makes the noise that they all do, gets to the grey screen with the Apple icon and loading icon, then turns itself off. Its an older Power PC. A friend suggested it may by the PSU giving up.

Also, when it did start, the screen was really flickery, like there was some kind of electronic interference or something. Could this be related?

Any help will be great.

Thanks in advance,

Paul
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pigoo3

 
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Mac Specs: 13" MB 2.4ghz, 2gig ram, OS 10.7.5

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Quote:
Originally Posted by puggle_205 View Post
Hi,

My iMac won't start up. When I turn it on, it makes the noise that they all do, gets to the grey screen with the Apple icon and loading icon, then turns itself off. Its an older Power PC. A friend suggested it may by the PSU giving up.

Also, when it did start, the screen was really flickery, like there was some kind of electronic interference or something. Could this be related?

Any help will be great.

Thanks in advance,

Paul
Have you had this computer long, and has it always worked fine up untll this point?

- Nick
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puggle_205

 
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I have had it for about 2 years now, although the machine is about 5 years old. I replaced the hard drive when I first got it, and until the screen flickering, it had been fine, yes. It did take a few attempts to get started when the screen flickering started, but now is the first time it has totally refused to start up.

Paul
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pigoo3

 
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Originally Posted by puggle_205 View Post
I have had it for about 2 years now, although the machine is about 5 years old. I replaced the hard drive when I first got it, and until the screen flickering, it had been fine, yes. It did take a few attempts to get started when the screen flickering started, but now is the first time it has totally refused to start up.

Paul
Two ideas:

1. Have you tried "booting" from a CD/DVD...such as the disks (grey/siler color) that came with it....assuming you have them.

2. You could try performing the hardware test...which is on the grey/silver disks that came with the computer (if you have them).

In any case...just trying to see if the computer will boot from a DVD/CD disk ok vs. the computers hard drive.

- Nick
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Mac SK

 
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Could be the pram battery as why it want start up. Is this a Crt mac or flat screen.
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puggle_205

 
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Nick, I do not have the disks. I have upgraded it to Leopard from Tiger using a friend's disk.

Mac SK, it is a flat screen iMac, the white one before the one with the iSight camera built in. What is the pram battery? Sorry, I don't know much about computers at all! :-S

Paul
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Mac SK

 
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Dont use the words {friends disc} on the open forum. The pram battery keeps the user settings and they last about 5 years. Some mac's will refuse to start if the battery is dead. You have to open up the mac to change it.
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puggle_205

 
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Ok, I've changed the hard disk before so opening it up isn't a problem. Where would the battery be and what type of battery is it? My Mac is around 5 years old so that could be the problem. Will I have lost all my settings? Would anything we be lost?

Paul.
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Mac SK

 
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Its a 3.6 volt 1/2 AA lithium. Its in a little holder on the MB. Its just a guess. Some Macs are not happy with a dead battery.Replace it to rule out the battery and move on to a what could also be a power supply problem.
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What is the pram battery?
It should probably look like this:



- Nick

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
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puggle_205

 
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Thanks guys, I'll buy one on my way home tonight and let you know if it works.

Paul
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Thanks guys, I'll buy one on my way home tonight and let you know if it works.

Paul
These usually aren't available just anywhere...if you are able to get one on the way home tonight...good for you!

- Nick

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
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puggle_205

 
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I've had a look inside, and the only battery I can see is a 3v CR2032 flat one.

http://www.selectrahengelo.nl/webshop/images/CR2032.jpg

Is this the pram battery?


Paul
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Mac SK

 
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Mmmm.. I dont open up this model ever day of the week so if anyboby else knows why theres a flat cell in there..I guess..Yeap..That has to be It. If you did not see the round one and thats the only battery in there..thats the pram battery. Sometimes the round one has a black cover over it that pulls off..if that all you got thats it. Not all macs share the same form factor. Some newer models are more PC like. I mostly work on towers and older macs that have the round battery. Pick one up at a PC store or radio Shack. And maybe that will solve your start up problem.

Good Luck
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Mac SK

 
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The Mac Mini also uses the 3 volt flat cell. Its about time for the first gen mini to need a battery.
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