Hardware :: Power Mac Shut Down Automatically And Loud Fan - Faulty RAM?
May 7, 2009
Over the last year I now and again get this strange this happening where the computer would freeze and the fan would come on at full speed and be very loud. It also started happening when I turn off the computer for a while and turn it back on again. It would not start up and the fan would just kick in. The only way I could get it going was to manually turn the machine on and off until it would eventually turn on properly. Sometimes I would have to do this 4 or 5 times.
Then today the computer just turned itself off automatically. No warning, nothing, just click and off like when you have a power cut, but there was no power cut. So I ran a quick hardware test from the OS installation disk and it said that it detected 2 faulty RAM sticks at startup. I was worried it might be a logic board problem but that has come back on the test saying it is okay.
Would having faulty RAM cause the above to happen? And how reliable is the hardware test that comes with the Apple OS installation disk? I am praying it is just RAM and nothing more expensive. I am gonna clean out the fan today, and dust things down a little bit just in case it is a bit of dirt or something, but I would be interested in other people's opinions.
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Dec 3, 2007
This morning the hard drive on my G5 sounded like it was at 8000 rpm's and there was a message on my screen to shut down the computer using the power button. I did this. Now anytime I try to power back up, I get the white screen with the apple and the "booting" icon, which then goes to a blue screen with the same icon, which then is just the blue screen with my mouse icon floating around. Also, on the random occasion, after booting to the blue screen it takes me to a DOS looking screen that asks for my login and password, of which I have neither.
Information:
Power Mac G5
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Dec 21, 2007
My G5 has developed a problem with restarting. Basically if I restart it gets to the grey screen with the apple logo and the spinning thing but shuts down as soon as it gets to the blue screen. This will happen for as many times as I care to restart it. The only solution I have come across is to take out the SDRAM modules and swap them round (any combination will do as long as they are swapped) and bingo, it starts again as if nothing was wrong.
Initially I had four 512k modules from Crucial and recently replaced them with two 1024 modules from another manufacturer to see if that would solve it but it didn't. Zapping the PRAM also didn't work. I should say also that around the same time it developed a habit of shutting down mid-use, but this was solved by switching the processor usage from high to automatic.
Information:
G5 2ghz dual
Mac OS X (10.4.10)
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May 14, 2010
Just throwing out my situation and resolution for any who encounter it (When I MRoogle'd it originally, I saw others ran into the same issue)
Specs: 17" i5 Glossy (Mid 2010) - MBP
Issue: Battery Not Charging
Details: In short, with the power adapter plugged in, my MBP would still show as "Battery Not Charging". The light on the adapter would stay green and not change to orange. While it wouldn't recharge the battery, it did provide enough "juice" for the MBP to run off of.Some of the posts on this forum pointed to this being a faulty battery and to take it into the Apple store. In doing so, the helpful Genius diagnosed the problem as the Power Adapter being faulty, not the Battery.
Resolution:
They provided me with a brand new power adapter right out of the box. In and out of the store within 15 mins.
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Apr 21, 2012
Apple are replacing the faulty Nvidia GPU with another faulty GPU...
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Jun 30, 2012
This is what my monitor looks like when on this screen saver.Not actually that red as I'm typing now though this screen saver really shows it up.url...
Info:
Mac OS X (10.6.8), Logic 9.1.6
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Oct 7, 2006
I'm using a B&W Power Mac G3 with 512MB RAM and OS X Tiger for a SMB file server (with 5 users) and a USB printer server. Everything is working good, but I have a problem.
It doesn't have a monitor or keyboard/mouse attached normally (I can configure it via VNC). The problem is that I would like to be able to turn the machine off when it's not needed (like at night sometimes, days when I won't be home, etc.). I would like to just hit the power button and have it turn off, however it puts it to sleep instead.
Normally, sleep would be fine, except on the B&W, the fans still run, just the HDs shut off, so it's still noisy as heck.
Is there a way to make the power button shut it off? If not, any other easy methods of shutting it off you can think of? Via VNC won't cut it, as my dad needs to be able to turn it on (not a problem) or off as well.
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Jun 11, 2009
I don't really remember what I was doing but it just turned off then when I tried to turn it on it would make a sound like when you turn it off. I think its the hard drive stopping but its like high pitched to low. and it kept doing that then after a few times I got it to start up.
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Sep 14, 2009
My powerbook will not start up all the way. It suddenly went off yesterday and did not give any noticeable warning. I left it alone after trying to start it up several times. I tried again today and had the same problem. I will here the motor for a few seconds and then nothing. Also, it did come on twice, went off both times when titled the entire laptop up. So, if I tilt it at anytime it automatically shut off.
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Nov 18, 2007
My G5 has been making more noise at start up. It sounds like one of the fans is making a grinding "rrrrrrhhhh" noise. My living space if very cold and quite dusty (warehouse). I notice it more on colder mornings ( inside temp 45° - 65°F ). Should I refrain from using my machine on cold mornings/nights until the heat is running?
Information:
Dual 1.8 G5 (2003)
Mac OS X (10.4.11)
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Dec 13, 2009
I have a problem. I have installed Leopard on a partition on my MacBook. When install successfully completed, my Macbook restarted but it hangs and does not restart so I had to switch the power off by the power button. I then switched my MacBook back on to complete registration and finally got into Leopard.I then updated using Software Update and then restarted but it will not restart. When I try to restart i get presented with a window telling me that "Updating Boot Cache". I then click "OK" but it hangs on the desktop wallpaper and pointer. I have tried to leave my MacBook for half an hour but it is still hanging on the desktop wallpaper and pointer. Same thing happens with Shutdown
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Apr 13, 2012
I recently found that the cause for my macbook pro hanging on shut down was due to Kaspersky running in the background. Because quiting it before shutting down every time is annoying is there a way to automate the quitting of an application when I request my computer to shut down?Â
Info:
MacBook Pro, Mac OS X (10.7.3), Logic Pro 9
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Apr 13, 2012
I recently found that the cause for my macbook pro hanging on shut down was due to Kaspersky running in the background. Because quiting it before shutting down every time is annoying is there a way to automate the quitting of an application when I request my computer to shut down?
Info:MacBookPro, Mac OS X (10.7.3), Logic Pro 9
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Dec 29, 2007
I have a problem with my G5 freezing and it is preceded with by loud fan noise. I was wondering if the hard drive could be the problem? It had the problem with 10.4 as well as 10.5. It happens at startup most of the time and eventually lets me get up and running and stops being a problem.
Information:
G5
Mac OS X (10.5.1)
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Mar 2, 2012
When I power up my iMac, I encountered a very loud fan sound in the background that I had never encountered before.This happens despite turning off and powering up again.
Info:
iMac, Mac OS X (10.5.8)
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Dec 7, 2007
I have a DP 2.7 G5 Tower and lately I come into my office to find it with dark screens (dual monitor setup), and I am unable to in any way control it by the mouse or keyboard. I imagine it's "hung?" The fans are on full blast and it sounds like it's planning to take off at any moment. I've awakened in the middle of the night by the sound of it and it's in that same state. What to do? I restart it at the power button. I then have to run Disk Utility to verify all the disks and RAID setups.
Anyway, I read about the coolant leaks issues. I started running a temperature monitoring program for the past few months, and its been doing about the same type of pattern since I started monitoring it. Doesn't appear to be unusual. Everything appears to be working fairly well, except for this issue. System is OS X.4.11, and checks out fine with Disk Utility. So far the hard reboots haven't done any damage to my disks, but it worries me greatly. Also the "liquid cooled" aspect worries me greatly.
Information:
Multiple Macs iMac G5 & PowerMac G5
Mac OS X (10.4.10)
Liquid Cooled
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Mar 24, 2012
I was out of town so this description was second hand but the computer has been running a little weird for a while. When I have too many apps open or on a website that has a lot going on...the computer starts revving up until I quit out of everything and let it slow down. I guess while I was gone, this happened but nobody quit out the apps and it eventually turned the screen black. When I tried restarting it sounds like the computer is working but the screen is black so I can't see if it is booting up or not. I took the monitor into the apple store yesterday and it started up right away for them. It's a cinema 23" I think.
Info:
Power Mac G5 (Late 2005), Mac OS X (10.5.8)
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May 25, 2012
I've had problems with my Mac for a while now. First of all, it indicated ram problems with 2 beeps. I later fixed this by moving and changing around modules. It was solved, but now a new problem. The Mac seems to turn on, making its iconic sound for startup, but the screen remains black. After about a half to one minute, the fans go crazy and I have to shut it off. I've tried a few things like holding shift or alt, but that doesn't work as it doesn't even display a white screen.Â
I need to know what to do and I don't really have the time to buy new parts right now. I'm really a windows based pc fixer by the way so I'm new to fixing macs.Â
Info:
iPad, iOS 5.0.1
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Jan 16, 2011
The machine is in a very cold area, was on for about 10 to 15 minutes before it just shutdown (like the plug was pulled) I checked the powercord by using another , same problem. I try to push the power button but nothing happens.
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Jun 17, 2009
My 15" early 2008 MacBook Pro won't shut down unless I hold the power button. I have done extensive searches and have done the following and the problem still persists. I have pulled the battery to reset the SMC or whatever it is called. I ran disk utilities and repaired the permissions. I deleted unnecessary files in the preferences folder...... still no go..... in fact it won't load software updates because it gets hung up.... then I have to force quit it by holding the power button..... I am at a loss.
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Mar 25, 2012
Is this an indication that some hardware item is needing replacing? After a shut-down I'm having to keep the power button depressed for probably up to a minute before the system comes to life.
Info:
iMac, Mac OS X (10.7.3)
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Apr 17, 2012
I tried to copy some files and as the transfer was about to be completed, I got halted and a screen message appeared in 4 languages forcing me to shut down the computer. A similar message had only appeared twice in the last couple of months, but I didn't pay any attention, since the system worked fine after restart. (I have been using G4 for more than 8 years). But now every time I try to copy any kind of files from anywhere to anywhere, just as it is about to be competed, I get the same "shut down" screen.
[code]...
Info:PowerMac, Mac OS X (10.5.8)
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Apr 24, 2012
How do I shut off the voice alert to grammar and spelling errors?
Info:
PowerMac, Mac OS X (10.5.8)
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Jun 3, 2012
My iMac won't shutdown unless I hold down the power button. It just sits on the grey screen, sometimes with the cursor sometimes not.
Info:OS Lion, Mac OS X (10.7.2)
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Sep 12, 2014
Saved my .AI file I was working on, the power shut down in the office and when I restarted my computer, the file was 2 previous saves before. I lost important info. Is there a way to find a hidden file from somewhere in outer space to access the most saved version of the file. I DO save my files often to avoid some basic issues, but this one seems like a software glitch.
Info:
iMac, OS X Mavericks (10.9.4)
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Jun 28, 2008
So I came home today and found my TC sitting silently coolly in the dark. I tried another plug on my UPS and reseated the power cable. No luck it won't power on. When I have it replaced at the apple store am I SOL with the backed up data? Will they swap the drive? I guess since its just a backup it doesn't matter so much, but backing up two macs from scratch will sure take ages. Anyone else had a working TC just shut down and refuse to power on?
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Oct 3, 2009
My macbook has developed a problem where when the lid is shut and the power is connected it wakes up from sleep and then goes back to sleep and repeats this process every 30-60 seconds.
What's weird is it doesn't wake from sleep and get stuck in this loop when�the lid is open and the power is connected and I select sleep from the Apple menu�when the lid is shut and the power is NOT connected and is running from the battery
I recently updated my mac to Snow Leopard and put in a new HDD and since doing so the problem has been occurring.
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Apr 26, 2012
My MacBook Pro froze while I was using it, so I shut it down manually with the power button. When I turned it on again, the screen with the Apple came up and the small spinning wheel is showing, indicating that it is loading, but it won't going any further than that, so I can't start it up or access any of my data. What can I do?
Info:
MacBook Pro, Mac OS X (10.6.8)
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Jun 5, 2014
We're not used to having the computer's power button on the keyboard. Occasionally, when trying to hit Delete, one of us turns off the computer power. I'm wondering if there is a setting (I really don't know my way around macs or I'd check myself) that can trigger the shutdown only after the power button has been held 3 seconds or more. This would prevent those accidental shutdowns.
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Aug 23, 2009
I just bought my MacBook Pro last week. When I power it up, it makes a loud noise for about a second and a half. I think it's the hard drive starting up or the disc drive. I'm not sure which one, but it's pretty loud, so I was just wondering if anyone else noticed this and if it is normal.
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