Hardware :: IMac 17" G5 Won't Boot Up - I/O Button Flashes With White Light
Mar 31, 2008
The iMac G5 (17") doesn't want to boot up, when I press the I/O button it flashes with its white light, and then nothing happens. When I do that with the back-cover off light 1 is lit as long as the machine has power, but light 2 only flashes when I connect the pins that the powerbutton connects. I know that there was a problem with the powersupply, but the soldering I did should have fixed that.
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Jul 21, 2009
I have a G5 dual 1.8 power PC...Bought some ram put it in & booted up. Then a red light came on the logic board behind the power button. The machine wouldn't turn on....I called apple care & we rearranged the ram, now the red light is gone but my system still won't boot up. The white power light blinks every few seconds... the apple store told me sorry can't help because your machine is vintage. Even if my logic board is fried is there a place to buy one on the cheap?
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Jun 4, 2014
During the boot-sequence the screen of my Imac 27" flashes green (once), then returns to normal. This does not happen when I boot my Windows (Bootcamp) partition, so I assume this is some kind of OSX driver error. This started to happen only after I installed the latest patch (10.9.3). How to get rid of it ?
Info:
iMac, OS X Mavericks (10.9.3)
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May 16, 2010
I have an iMac G5 iSight. When the power button is pressed there is no sound and a white light flashes, but nothing else happens. I tried the power reset method and replaced the power supply, but the same thing happens. The white light just keeps flashing.
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Mar 15, 2012
After leaving machine on all night as I usuaaly do in the middle of a project I came in this morning to find power button blinking no -stop. No images on displays.Have reseated RAM (original 2G from Apple and subsequent modules (4x2) from OWC) twice and no change. No peripherals connected and no change.
Info:Mac OS X (10.6.8), Mac Pro 3.0/8-Core, 18G RAM, 2-1Tb
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May 30, 2009
Magsafe light flashes green to red and battery will not charge.
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Aug 6, 2010
my Macbook (I believe a 2008 model wouldn't wake up from it's sleep like it does every time I open it (I usually set it to sleep rather than shut it down). I turned it off manually, but when I attempted reboot it does either one of two things:
a) When I simply press the power on button, the screen stays black and the sleep light fades on once, but then fades off and all mechanical sounds abruptly stop.
b) When I press and hold the power button, the sleep light fades on, but then flashes about 10 times rapidly before fading in and once again abruptly turning off.
I have tried this with the charger plugged in several different outlets, not plugged into the Macbook, waiting, removing and putting back the battery. A Google search said it might have something to do with the RAM and pushing it back in, but I have no idea how to do that.
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May 21, 2012
My White iMac 24" won't boot up anymore.I noticed he was running slow lately and in the browser he crashed regularly so I need to reboot.Using the power button I have to shut him down and reboot again, only, the last time, he refused to boot up.Instead I got a solid black screen, and a solid white power light at the front... When booting the only thing I hear is a little buzz and then, nothing... Several support forums said this wasn't very good and it might be the last breath of my iMac. Trying a few things, hoping they would bring him back to life couldn't help:
- Power on with "c" kept down
- power on with control+option+p+r was something I read
- Power on with "shift" kept downÂ
nothing would work.Â
Info:
iMac, Mac OS X (10.6.8)
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Feb 24, 2008
i just got my MBA on monday and now the magsafe adaptor doesn't work anymore, it flashes green light and does not charge. Does anyone know what's wrong with it?
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Jun 26, 2012
My Macbook Pro does not always turn on first time, it takes awhile to click on, it just clicks every time I try to turn it on, It turns on when its warm though, it also turns off when I close the lid, but the light says it is on, after leaving the lid closed for more then 5 minutes, and I open the lid it is turned off? I do not understand what is cuasing the problem?
Info:
MacBook Pro
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Mar 15, 2010
I've begun to notice a ring, roughly three inches in diameter, in the middle of my Air, Rev C, Screen. It is a white ring, a couple of millimeters thick, that I can see best behind an all white screen, i.e. a blank page of a word processing document.
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May 4, 2005
I've begun to notice a ring, roughly three inches in diameter, in the middle of my Air, Rev C, Screen. It is a white ring, a couple of millimeters thick,that I can see best behind an all white screen, i.e. a blank page of a word processing document.
Anyone seen anything like this before. I can actually see part of it right on the white of the page I am typing in this thread.
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Jan 22, 2009
white 24" iMac purchased in the fall of 2006 2Gb RAM 500Gb HD
First sign of trouble:
While watching trailers at apple.com I noticed some pixels on the screen were pink and blue. Not in lines but just in random spots. They would disappear now and then when you moused over them.
Tried some restarts and eventually it would sometimes freeze at the blue screen with the mouse usable.
I did a safe-boot and everything was fine and normal. No pixels, almost seemed normal. After a few more restarts and resetting Pram, Safe mode began showing pixels as well.
I was getting concerned for the data on it at this point and hooked up a firewire cable and booted it up in transfer mode and got all my data off.
Now I wanted to try and to a clean install of Leopard 10.5.
Second sign of trouble:
Now the computer won't get past the grey screen with the apple and progress wheel. It will be just about to go to the blue screens when the wheel will freeze and thats it.
Should mention the grey screen is now covered in pink and blue pixels everywhere.
Safe-boot won't get in.. Resetting Pram doesn't change anything.
Command Option O F doesn't work.
Tried booting from the install disc, holding 'c' down it almost works then the message of "You must restart your computer" in like 10 different languages comes up.
Holding down option lets me choose b/w the hard drive and OS install disc but still gets the restart message.
I am pretty much resigned to "looks at watch" submit the official time of death on it. Ever since the original iMac in 97 this is the first Mac that has ever died on me.. Kinda shocked and disappointed.
Any confirmations or suggestions on how or why it died would be helpful. Was it a hardware or software breakdown. My guess is hardware. /shrug
Or just maybe there is a fix still out there
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Nov 5, 2008
I have a 20'' iMac with a 2.4GHz Core 2 and an HD2600XT.
There are light vertical wavy floating lines visible on the screen when running Windows XP. They are more clearly seen when you look the screen at an angle, from down below you look upwards to the screen. The floating lines can be precisely seen on grey backgrounds. These lines are not noticable much, but when you closely look with grey backgrounds, they are visible.
The problem is very strange because I've tried updating the drivers to my HD2600XT, and no luck at all.
I'm not able to determine wether the problem is hardware of software related, due to the problem not existing in Mac OS X.
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Mar 22, 2010
there are two things that the macbook is doing to me. one is that sometimes when i move the screen up or down (the hinge is rather stiff) a white (thin) line flashes across the screen. but recently, while randomly browsing through the internet, the screen almost... i guess faded to a gray screen, but like gradually, and not like a kernel error, like the display just faded away. happened twice in a row, did a battery pull and now wont do it again.
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Aug 22, 2014
Mac won't boot, starts with white apple screen and spinning wheel. Also has grey loading bar which disappears after loaded then stays at white apple screen.
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Mar 15, 2008
I turned my Mac onto and all I got was a white flashing light on the front.
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Apr 20, 2012
My PPC G5 Mac Power Pro has been working fine, on one startup recently the screen didn't come on, the keyboard and mouse did not pass the startup test and the white light flashes three times. After a while the fans go into hovercraft mode! I've reseated the RAm and checked all other cards.
Info:
PowerMac, Mac OS X (10.5.8), To be supplied
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Jul 16, 2008
I'm a relatively new Mac user. In fact, I haven't had that much experience at all. I work in a donations store and today we got a donation of an iMac. I searched around a bit and I'm sure it's a G5 model. It looks like [URL]. It looks to be in great condition, no scratches, not even a fingerprint on the monitor.
However, when I turned it on, after plugging the power chord in, I started experiencing problems. The fans kicked on and I heard the chime (I assume that was a post?) but I was getting no video and the white LED on the front of the screen was flashing on and off. The exact pattern is strange - I don't think I've see it before. It flashes once, then stops, then flashes again, then stops. Over and over. No sequence. :| The computer did not come with a keyboard or a mouse. I was testing it to see if it actually worked, before I bought the keyboard and the mouse, so I'm wondering if it has something to do with that? I'm not really sure.
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Feb 9, 2012
i have a problem with my imac 21,5 medio 2010, since today i have a white spot/line of 3cm and i have warranty. will apple repair it ?Â
Info:
iMac (21.5-inch Mid 2010)
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May 19, 2009
My friend's MacBook Air crashed. It blacked out, and turned off. Now, when he presses the power button, he gets a beep, and that's it. the white LED light also doesn't flash. It's a short, soft beep.
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Mar 4, 2010
Got my macbook here. Bought it 1.5 years ago. Out of warranty. Running on 10.5.8. When I printscreen it, the white strip does not appear. Its present even when I'm using my mac. And additionally, It's only visible when the background isn't white or black. Also, its been happening on and off. It normally goes away if I've been carrying my macbook in my backpack and then open it up again (leads me to think maybe it is sensitive and may have been bonked on something while I was carrying it in my bag). However, this time, it hasn't gone away simply by rebooting it.
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Mar 6, 2010
So this morning I woke up and went to press the power button of my Macbook, but nothing happened. I noticed that there is no white IR light and the fan doesn't respond. I checked the battery, it was at full. The power cable was also green when i plugged it into the Macbook. However, it still wouldn't turn on.
Just a general comment, I use the Macbook as a printer server and to browse the internet, so nothing intensive is forced onto the Macbook.So then I tried resetting the SMU, didn't work. I tried turning it on with only battery , and then with only power source, both didn't work either.I have never spilled anything on this macbook, never dropped it, smashed it, or abused it in any way. However, it is 2 years old and I never bought Applecare (Usually, if something is defective, it will show within the first 30 days). I assume it's a logic board failure, and it's going to cost around 700 to fix (which i'd rather just get a new macbook).
I was wondering if anybody know of a reason why the logic board broke, or if there is any remedies that i haven't tried yet?Also, I'm thinking of pawning it off on ebay and then save up and wait for the Macbook Pro refresh. Does anyone have an estimate on how much I can get for a broken Macbook (screen is fine, 4gb of ram (i might replace it w/ 2gb instead) 250 gb HD (might replace with 80gb HD instead), 2.0 ghz c2d (prbly useless cuz the logic board is fried)
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Aug 13, 2009
the new alu wireless keyboards feature a rwd, play/pause and fwd button on the keys F7, F8 and F9.
Since I have the previous version, the white fullsize bt-keyboard, I was wondering if it is possible to somehow map these features so that they work with my keyboard?
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Nov 21, 2009
With my macbook (my module is in my sig) Colors are not true i am working on a webpage and light colours show up as white but on other computers and monitors it works fine.
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Jan 26, 2010
I have a Mac G5 Dual 2.0ghz Running 3GB Ram 6 x 512 ddr pc 3200 400mhz i use it for music production, So as you can imagine i need plenty of ram to run some of the high end plugins, So i purchased 2 x 1GB Pc3200 400mhz Ram, Pushing up my total ram to 5GB, Plenty for what i need.
So i installed the ram in the 2 outside slots(the only 2 left) the mac booted up but wouldnt recognise the new ram,( thought i would save a few pound and went for the extra value ram) So i thought i would move the other ram up a slot and put the new ram in the first slot instead of the last one, it still wouldnt recognise the new ram,So i turn it off took out the ram, put the old ram back in its original slots, Turn the mac back on,......Nothing but a white light flashing on the monitor, & the fans going mad !
After trying each set of ram in pairs one at a time i managed to get one set to work in the first slot, 1 gb (2x512) once! Now i cant get anything to boot this mac up! the ram worked before, so why not now. Ive only been using a mac for about 2 years, and before that i built pcs for a living, & i know my way round pcs fine , but this has really got me.Please Please Please. if someone can help i would be very grateful, i need to get some important work finished.
Best Regards.
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Aug 2, 2010
It's been on for about 24 hours because I'm downloading a large file. (It's been completely on, no sleep.) I was using it a couple of minutes ago when I noticed the battery was low. I plugged it in without turning it off and went downstairs. When I came back, it appeared to be shut down. I tried pressing buttons on he keyboard/moving the mouse to see if it just went to sleep but there's no response. Even pressing the power button doesn't do anything.
when I close the lid, the sleep indicator is on. (IIRC, it's supposed to flash when it's sleeping but right now, the white light indicator is solid and only goes off when I open the lid.)
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Jun 24, 2012
I have normal vision and have found the ical update on OS Lion to be very difficult to read. As a photographer using a mac monitor for pre-corrected color, brightness, and contrast, changing the appearance of monitor is not an option for me. I am hopeful Apple will solve this design problem immediately and embed it in their OS update. It's not the size of the font that matters, it's the fact that light gray is on a white background and that makes reading it a nearly self-defeating process.
Info:
OS Lion, Mac OS X (10.7.1)
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May 1, 2012
My MAC is not opening. After pressing the on button its showing white screen with big ? mark no other response.
Info:
Mac Pro
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Sep 9, 2010
own a mac 19" desktop computer, it turns on but only flashes a picture of a folder with a question mark in it. is it done? any input would be appreciated.
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