IMac :: CPU Fan Randomly Start Speeding Up - How To Regulate
May 12, 2010
Every once in awhile my CPU fan will randomly start speeding up until it gets to about 2000RPM, the optical and hard drive fans will reach about 1250 RPM. After about 10 minutes of annoying fan noise it'll slow down back to around 1000 RPM for all fans. Is this normal? The temperatures all look fine according to iStat, and it's not like I'm doing heavy computing (just running firefox, uTorrent, and iTunes). Is there a way to regulate the fan speed, or do I possibly have a defective computer?
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Jun 16, 2012
I have a 15' MBP late 2011 8,2 2.2ghz i7, 8gb RAM, Hi Res Anti Glare. Over the last 4-5 weeks, my MBP would randomly speed the right fan up to 7000rpm causing the fan to go past the recommended max of 6200. This, on occasions has resulted in the fan producing a high frequency squeel as it is being worked too hard. Is it a co-incedence that 6 weeks ago 10.7.4 was released, could this be the issue? I have also installed the combo client update, but still my fan speeds up. I have booked it in to see a Genius, but just wondered if anyone has the same issue in the same MBP
Info:
MacBook Pro (15-inch Late 2011), Mac OS X (10.7.4)
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Mar 9, 2009
The Safari Reset option, does is clean and speed up the computer? Is it really necessary to buy a software to do the job, or the Safari Reset option is sufficient?
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Jul 18, 2010
i just recently bought a iMac G4 in good condition for $175 on Craigslist.I was on a budget so i couldn't afford to spend $1000 on a Macbook.I'm not too familiar on Macs since its my first one.But it seems to be a PowerPC, It's running Tiger OS, and the base of the Mac looks like a lamp.I'm sure you guys know what a iMac G4 is.So are there any ways of speeding up this thing? Is it slow because of its age?Because it seems to be in pretty good shape to me.I did a restore on it and it was still slow.I just need help on improving the performance.
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Apr 3, 2009
So Apple wanted to charge me $900 to change my broken LCD screen. I did the change myself for $86, a feat I am very proud of. Everything works great (the bezel's a bit loose and I did a little aesthetic damage to the hinge cover) but apart from that, the screen is 10x brighter than my old Rev B screen. The problem is this: I can't regulate brightness. Neither from in system preferences or from my keyboard. The monitor does, however, dim, and sleep. Is this a firmware issue? If so, how do I fix it? I would kinda' like to have control over screen brightness. After some use, this screen is really SUPER bright. I'd really like to get the brightness down to humane levels (it's shining out the back of the case where you normally don't see light).
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Jun 21, 2012
computer won't start. tried unplugging and holding in start button. After about a half hour and unplugging a few times, finally got it going. Imac G5
Info:
iMac, MacOS X (10.5)
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Jun 18, 2012
Can any recommend an App for cleaning/speeding up my iMac and Macbook Pro, both of which use Lion? Hard drive space is not really the issue, but I can't help feeling that my iMac is not as nippy as it used to be - my basic requirements are
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Feb 23, 2009
I took everyone's suggestions and downloaded NeoOffice instead of using TextEdit. Since my entire document was in TextEdit, I just decided to copy and paste all the text into NeoOffice. Little did I realize that my book I'm writing has grown to 98 PAGES! Obviously, as soon as it got the document imported, the entire thing froze up. I haven't been able to get it to work well at all. I'm using a Powerbook G4 1.67ghz 1GB RAM, Radeon 9700. I can't believe that such a computer can't handle simple word processing tasks, and I'm convinced that it's a software issue.
I'm running Mac OSX Leopard 10.5.6 with all latest updates.
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Apr 29, 2010
A friend sent me a .mp3 file of a theme song and asked me to speed it up to 1.5 or double speed. I tried adjusting tempo but it doesn't seem to do much. Can I do this in GB?
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Sep 3, 2014
iTunes is racing through the songs in my playlists, but only on my iMac. It plays fine on my other devices.Â
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Aug 15, 2009
I'm backing up my HD to a new external hard drive using time machine for the first time. It is going painfully slow. Does anyone know how I can speed it up?
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May 5, 2010
Wanting to watch video lectures on my iPod at 1.5-2x speed. It's great on my laptop w/QT, but impossible on the iPod. So, I need to take the original video, speed it up (shorten it), and save it for viewing on the iPod - is there functionality in QT Pro or iMovie. If not, a preferably free third party app?
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Mar 22, 2012
Having problem with Hard drive fans just speeding up every now and then usually I clocked the time when this happens it usually happens every last 2 weeks of the month after that it stop in the beginning of the months.
Info:
iMac (27-inch Late 2009), Mac OS X (10.7.3)
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Jul 20, 2010
Ok so I have my project in iMovie 09. I select a portion of the project, hit clip adjustments so I can speed it up, and then it just reselects the entire clip. Is there any way I just get a part of a clip and speed it up once it is my project?
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Oct 31, 2007
My new Alu iMac just randomly shuts off. It's happened like 5 times (once while I was typing a paper). I have updated to 10.5, and it has happened twice since the install.
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Feb 12, 2012
I have an old iMac G3 (400mhz slot loading) that I got second hand for free. When I first got it, it seemed to work perfectly in every way, but the hard disk wasn't very big so I tried to install a new (larger) one. Everything seemed to go fine, but after the upgrade, the computer would only stay powered on for about 10 minutes before shutting itself off. I assumed that it was a problem with the hard disk, so I put the old one back, but the problem persisted. It will only stay powered on for a maximum of about 20 minutes before blinking off and then it has to sit for a while before I can get another 20 miutes out of it
Info:iMac, Mac OS X (10.1.x)
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Sep 4, 2014
My mid-2014 15" Macbook Pro randomly "loses" its retina display at the top menu (becomes pixel-y), where the battery, sound, and wifi logos are (on the top right side of the screen). A restart fixes the issue, but I want to know if this is an issue that can be fixed?Â
Info:
MacBook Pro with Retina display
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Mar 19, 2010
My Mac is noticeably slower so I'm looking to clean it up before I try a clean install on the hard drive. I found a Kodak printer program and an HP printer program both of which I deleted from applications, but both of which are chewing up 500MB of process memory, and when I force a quit they just pop open again a second later.Question:
Where are these programs hididng? How do I kill them?
Any other tricks to speed my Mac up (I verified permissions already).
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Dec 8, 2010
I purchased a 24" iMac in fall of '07 and up until have had no problems at all. Let me describe the problems I'm having now and maybe someone can tell me what to do to remedy them.
A couple weeks ago it started freezing randomly. The mouse will switch to the beach ball and just spins endlessly. I can move it around but can't really do anything other than that. I have to do a hard reset to get it back to normal. Sometimes a couple programs are open, and sometimes none. It seems like it happens often when I quick switch from one user to another. It will switch, work for awhile, then freeze.
Now, no big deal, annoying, but whatever. But, the other day after doing a hard reset it revolted into a white screen with a flashing folder with a question mark. I did some research and found that I needed to repair the startup disc using the snow leopard disc. I did that and it allowed me to boot it back up normaly but didn't really solve the freeze up issue.
So, that just happened again, so I'll have to boot it up with the disc again and repair the startup disc when I get a chance. It's really beyond frustrating now.
I have repaired all permissions, updated all firmware, made sure the drive isn't full, pretty much everything short of backing up and wiping the drive and reinstalling the OS. Is that what I need ro do now? I mean, I know I need to, but is there something I can do to remedy until I can get around to doing that?
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May 2, 2006
Does anyone know what may be up with my Mac G5?? It just keeps on turning itself off without warning! It can happen at anytime... usually about 5 mins after I switch it on, although this has varied!
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Sep 2, 2007
a close friend has a 20' iMac g5. the Computer now shuts downs sporadically and she says it gets a lot hotter any idea what's wrong?
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Nov 30, 2008
A couple of nights ago, my iMac randomly turned on in the middle of the night, so I held the back power button to shut it off. Later that morning, I tried to turn it on and was left with this screen (see attachment). I was very confused. After trying to boot into target mode, safe mode, the assorted...I restored the computer. It seems to work fine now, but I'm still wondering...what the happened?
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Mar 20, 2009
I got my new 24" iMac ~2 weeks ago, and it's AMAZING compared to my MB... Except the fact that the computer will randomly wake up or start up in the middle of the night. The first night I had it home, it turned on 7 times! The next night, it did it once and I turned it off. It stayed off. The day after that, I turned it off when I went to bed. At 4 AM I hear "DONG!!!!!!!!" Ugh. I get up, and turn it off, only to have it start up at 5 AM. x_x I spent the next day looking for answers, I turned off wake for ethernet network something, and turned off screen sharing, quit all programs, and turned off the Airport card. Still, at 3 AM, it wakes me up. I turn put my jacket over it so I can get some sleep. I've been fighting it every night. I'm tired of it. Yesterday I reset the SMC and PRAM, and it still woke from sleep.
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Oct 29, 2009
I recently replaced a failed hdd in my late 2009 aluminum 20 inch. I watched countless teardowns and hdd replacement videos and picture guides before I did this at it was my first mac machine. Not every time, but occasionally when I restart the machine the temp will be some where in between 79- 86 degrees f and the fan will be going at 1500rpm randomly for about 30 seconds and then stops. Other than that everything has been flawless since the replacement.
Did I do something wrong? I put the thermistor correctly on the hdd when I reassembled. What could be causing this as before I replaced the hdd I never heard the fan at all. Mac was bought on august 2, 2009, when hdd died I tried to have apple exchange it, but the wanted to give me a refurbished imac. Since I have had terrible luck with any refurb in the past I just replaced the hdd in it myself.
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Apr 23, 2012
My IMAC with Lion desktop is randomly shutting off.
Info:
iMac, Mac OS X (10.7.3), Lion
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Jun 2, 2014
Why my iMac (27-inch, Mid 2011) has suddenly began randomly freezing up?All working great since I got it but recently I am having a consistent problem with it ceasing up. As a result I took action and restored it to factory defaults over the weekend thinking this would resolve the problem but unforuantely after 2 days without issue the problem has re-surfaced.Â
EtreCheck version: 1.9.11 (43) - report generated 2 June 2014 20:53:38
BSTÂ Hardware Information:Â Â Â Â Â Â Â Â Â iMac (27-inch, Mid 2011)Â Â Â Â Â Â Â Â Â
iMac - model: iMac12,2         1 2.7 GHz Intel Core i5 CPU: 4 cores         12 GB RAMÂ
Video Information:Â Â Â Â Â Â Â Â Â AMD Radeon HD 6770M - VRAM: 512 MBÂ
[Code] .....
Info:
iMac, OS X Mavericks (10.9.3)
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Nov 16, 2010
I do not have AppleCare on this machine. I've got a 27" iMac that will randomly shut down, be it in the middle of playing music on iTunes, while I'm typing a document or while the machine is simply in screensaver mode doing nothing. Usually the machine tries to instantly reboot itself. All too often, it cannot be rebooted and I have to let sit for quite sometime before it will even power back on. Lately the problem has gotten worse, almost never reboots by itself.
Finally, in the last few days, it just won't turn back on. Nothing. My biggest concern is that I have an unreleased music album from an instantly recognizable major client on the iMac's hard drive, not due out for many more months and still unannounced. I can't simply take the computer into an Apple store for troubleshooting as those files are worth and could cost me exponentially more than even a new iMac outright ever would.
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Sep 21, 2007
My friends iMac G5 just recently has been randomly shutting down. Does anyone know anything I can do to him fix his computer?
I checked [URL] and there seems to be issues with power on some models, but his serial number just misses the infected batch.
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Feb 5, 2008
I looked into my issue a little but recently my IMac G5 started randomly shutting down when left unused for a bit but that seems to have stopped as far as I have noted. Now occasionally when it goes into sleep mode it will freeze on the black screen and the fan will go crazy. I plan on buying a MBP, if the update ever comes out, and then ill just completely wipe the IMac and give it to my parents, who still use the original I mac, G3 or something. I read a certain series of I Macs were having motherboard problems, W950 or something, but mine wasn't that serial code.
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Apr 26, 2010
Recently, my iMac 27" i7 has begun hanging in the most bizarre fashion. It usually seems to happen when I wake the computer from sleep or screen saver, but that isn't always the case. What will happen is that when I get to the computer, Mail will show symbology that indicates it is not connected to the Internet or Safari, upon booting, will not open a webpage (it sits on a white screen rather than delivering an error). I'll go to quit one of the offending programs, and it will not quit and beach balls instead. I then right click on the dock to trigger a force quit, and the force quit does nothing and the dock beachballs. I try to restart/shut down, and nothing happens. Thus I am forced to hard restart.
Conversely, I am sometimes able to get an offending program to force quit, but the rest of the computer (anything I click locks up) beachballs leaving me to hard restart. I find when this happens, my first instinct is to click system prefs and go to networking, where when I click networking, it locks up. Then I have to hard restart. Finally, there are times when it does respond to a restart request. It will go through the restart process up to the blue screen at the end, where the little spinning doohickey will appear and stay there indefinitely, forcing me to hard restart. It didn't seem to happen before I got my iPad but happens about every other day now.
At first it seemed to happen after I had my iPad charge from my computer, but now it seems to happen regardless. One time it hung while syncing with my iPhone and required me to restore it since the phone got messed up. I've done everything I can think to do to get to the source of the problem and I can't figure it out. I've looked through logs and didn't see problems (granted, I don't know if I'm looking at correct logs or if I'm looking for the right events). I have repaired permissions, and that seemed to help but not fix the problem. I bridge my iPad to my computer through Internet connection sharing, since I have an Ethernet internet connection. I created Automator work flows to turn it on and off (and AirPort) as I never leave it on when not using it.
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