MacBook Air :: Won't Shut Down And Often The Fan Runs At A Very High Rate

Jun 18, 2012

Macbook Air won't shut down and often the fan runs at a very high rate without stopping. I do notice it seems to get hot on the bottom more than in the past. Any suggestions as to what I should do, I can't keep holding the power button down to shut off the computer.

Info:
MacBook Air, Mac OS X (10.7.4)

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MacBook :: Stuck At High CPU Usage Rate

Apr 20, 2009

I will be running MS Excel, preview, firefox, and activity monitor. All of a sudden my Activity monitor says that there is about % User of 50% and the fan will start running. I cannot find what program is making it run this high. I quit every program and it gets stuck on this until I restart the computer. I have done this about 3 times and it always comes back. None of the programs are registering high CPU usage. My last computer had an overheating problem where the fan was always on and that was part of the reason I switched to Macs - really hoping that issues doesn't follow me from Windows to Mac.

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Mar 11, 2010

So I have a late 2008 MBP and the battery is draining way faster than it should. Coconut battery says that my battery capacity is at 93% and it only has 73 cycles but the battery has only been lasting 3 hours at best with a full charge, but most typically, it only lasts 2 hours while using the 9400m GPU and at idle. I have reset the battery per apple's instructions 2 times now and I have reset the SMC multiple times. this is what the system profiler says about my power capacity and consumption:

Model Information:
Serial Number:6N839TV313EB
Manufacturer:SMP
Device name:bq20z951
Pack Lot Code:0000
PCB Lot Code:0000
Firmware Version:002a
Hardware Revision:000a
Cell Revision:0100
Charge Information:
Charge remaining (mAh):3522
Fully charged:No
Charging:No
Full charge capacity (mAh):4226
Health Information:
Cycle count:72
Condition:Normal
Battery Installed:Yes
Amperage (mA):-1449
Voltage (mV):11830

This all happened out of nowhere one day, I used to get a solid 5 hours on each charge a month ago and now this.

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Laptops :: MacBook Pro Fan Runs High When Asleep?

Oct 25, 2010

MacBook Pro 2.16 Intel Core2Duo with 2 GB 667MHz SDRAM runs very quietly when being used. When left with lid closed overnight but still logged in, each AM the the fan is running loudly at high speed and the case is hot. As soon as I open it and it starts up, the fan quiets down and the case is cool in a few minutes. The temps range (when open and quiet) from 90-125 F for various components and the fan speeds are about 2000 RPM. Why should it run hot when closed and asleep.

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Apr 14, 2012

From a cold startup my Macbook pro 13 fan runs continuously at high speed.

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Mar 10, 2009

I'm using iStat and it says that my CPU runs at temps around high 70s, low 80 degrees Celsius for about 10-15 minutes at a time (also says the same for Airport card). It usually takes a while for it to cool down. I always place my laptop on flat surfaces. It does this even during light internet surfing minus flash or any other multimedia...now WITH multimedia use, it reaches the 80s no problem and I just quit the process cuz I don't want my laptop to explode one day.

I just wanted to know if this was average and what temps everyone else is usually running at?

I'm afraid that if it runs at these high of temps for a long time each time like that, then it may do some damage somewhere...

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MacBook Air :: Battery Gets Very Hot During Use And Doesn't Last Long, Fan Runs At High Speed

Jun 25, 2012

Macbook Air isn't a year old and I don't leave it plugged in ever. The battery might last 2 hours and gets very hot. In addition the fan runs at a very high speed. The computer won't shut down in a normal way. I have to hold the power button down to shut it off.

Info:
MacBook Air, Mac OS X (10.7.4)

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Mac :: Apple Mini (Mid 2010) Fan Runs On High

May 7, 2012

Fan runs on high all the time except when put to sleep or off? Vents are clear no blockage.

Info:Mac mini, Mac OS X (10.6.8)

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Power Mac G5 :: Fan Runs On High And Won't Wake From Sleep - It Freezes?

Dec 10, 2007

I have a G5 (Power PC, g5, Dual 1.8 GHZ with 1.25 GB SDRAM, and Mac OS X 10.4.10-phew!) and I recently: added more USB ports using a PCI card, and purchased a non-Apple 22" widescreen display.

Prior to adding USB ports, I was using a hub that ran off its own power source, and used a Samsung 19" monitor.

My situation now: everything starts up fine, but ultimately the fan will kick in at SUPER HIGH and won't stop. I can put my Mac to sleep--which stops the fan noise--but then it won't wake up.

I have run the Apple Hardware test and everything checks out OK. I've also reset the SMU according to directions from this forum; AND I've vacuumed out all the dust bunnies.

The fan runs so loud and so high it sounds like it's an airplane that's about to take off.

Short of bringing in my Mac to a technician, can you recommend anything? My Mac has been glitch free up until now.

Information:
mac G5
Mac OS X (10.4.10)
Tiger

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IMac (Intel) :: Fan Runs Full Speed On Shut Down

Aug 27, 2014

My iMac runs perfectly fine; more or less as it did when it was new. In OS X, when I shut down the computer, the fan runs at full speed indefinitely, unless I unplug it or boot back up.  When running, the fan is perfectly normal (increases speed a bit when doing something taxing).  I've never heard it at full speed before until this started happening.  After following the SMC reset procedure with no luck (I'd like to add that the SMC reset only says it relates to fan problems when the computer is ON), I searched a bit and noticed there are one or two cases where a problem like mine was believed to be a motherboard issue, and therefore a costly fix. 

However, here's the fun part. When booted into Windows 8.1, shutting down the iMac does not cause this issue to occur.  It stays silent, as it should, even if I disconnect then reconnect the power.  This leads me to believe it's unlikely to be a motherboard issue.  However I've wiped, restored, and reinstalled fresh copies of Mountain Lion, Mavericks, and Windows 8.1, and the result is still the same: if I don't want to have to unplug it from the wall, then I have to use Windows to shut it down. 

So then, my questions are these:

-What is the difference between shutting down from OS X and shutting down from Windows?

-Is an operating system allowed/able to touch BIOS settings?

-Is it possible to still be a hardware problem, given this difference? 

My default OS is OS X, and it makes no difference if I change that to Windows.  I also did a PRAM reset, even though that has nothing to do with fans...

Info:
iMac, OS X Mavericks (10.9.4)

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Power Mac G5 :: Display Shows Gray Screen - Fan Runs High Speed ?

Oct 10, 2007

I purchased my PowerMac G5 in 2003 and no problems till now. My problem is that on startup, the display first shows gray screen with a globe in a white box flashing in the center of the screen. This continues for about 90 seconds --- then the globe in box icon changes to a small file folder icon with alternating face/question mark flashing in the file folder. At about the same time, the fan speeds up dramatically. The fan continues to run at this high speed for about 90 additional seconds, then the fan returns to normal speed, and the startup continues normally to the blue screen. Once startup is complete, computer runs okay. The whole process takes about 4 minutes.

Information:
PowerMac G5, 1.8 Ghz, OS X 10.2.8
Mac OS X (10.2.x)

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PowerPC :: G4 Ibook Dead - Blank Screen - Fan Runs On High Speed?

Nov 22, 2008

I purchased a used ibook from owc in January and have had it back to them twice for repairs. Lately, it stopped booting up again and they told me to use [URL] to take the mobo out and ship it to Arizona to have the solder refloated. I did and got it back, put it together and it would boot up, only to run for 15 minutes and shut down. Thinking I missed something, I dissasembled it today and reassembled it. Now it turns on with a blank screen, the fan runs on high, and it will go no further. I tried to reset the power manager, reset the p-ram, the hard drive is only a few months old and my brain is getting fried with frustration.

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MacBook Pro :: Wireless Transmit Rate In Mid?

Mar 3, 2010

I've been following this forum for quite some time after I first got an iPod touch and, recently, an MBP "17.Now, after I did some searches on the internet and couldn't find the answer, Im asking here:My MBP comes with a built-in draft-n wireless card. I bought a draft-n wireless router just for the purpose of utilizing greater wi-fi speeds, but there is one thing I noticed:when I boot MacOS and connect to the wireless network it shows me, tat the transmit rate of the network is 130 (Mbps I presume), on the other hand, when I boot to Windows (via Bootcamp) and connect to the same network - it shows a network speed of 280 Mbps. In both cases the transfer speed are relatively close and go up to 8-9 Megabytes per second.

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Jul 1, 2010

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MacBook :: Fans On High Speed - Does This High Speed Effect On Computer?

Jun 16, 2009

Does it hurt the computer... If the computer is doing something (watching flash, playing a game) that turns on the fan full speed;Does this hurt the computer? There are a few games I like to play and they turn on the fan at full speed (computer gets hot too, on the bottom.)

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MacBook Pro :: Merged High Resolution Glossy Or High Resolution Antiglare?

Apr 14, 2010

How does the Antiglare screen look? Does it look cheap and flimsy like the matte screens on the pc laptops?This is my first Mac and i'm looking at going all out and getting the top of the line 15". I know I definitely want the HD screen, i'm just not sure which screen looks better. What about a 5400 vs 7200 rpm hdd? Is this upgrade worth it?

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Oct 25, 2009

For the last few days I've been worrying about my battery, I know it's silly and everything, but it's supposed to have 7 hours. It will go for a good 5 hours, sometimes more than that. But the percentage rate seems to be going down quite quickly. e.g half an hour ago it was at 73%, now at 62%. The battery time also changes quickly, from 6 hours 42, to 2hrs 32, back up to 4hours, etc. I have checked the condition on Coconut Battery and it's at 100%.

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Nov 6, 2010

I have a Rev B, 1.86 128GB SS. It is good except a little weak on battery and heat is still there for anything remotely intensive so my question is: How do you rate battery life of new 13 MBA? My Rev B gets roughly 2 hours watching a HD show from CBS, or 4.5 hours (best case) doing non flash surfing or anything non intensive work, watching photos, writing in word etc. Heat is there if I watch videos, like the example above, routinely around 70-74 watching a video show over the internet. RPM for fan 2500-3000 at that temp. How is the heat of the new one? (I tried one in the Apple store and it bare felt warm underneath while watching an episode on [URL]). My other finding is that the new one felt a little more "solid", cant point to anything specific but a general feel when closing and opening it. Btw, I still run Leopard since I felt that I lost battery time under snow leopard and that it was also slightly warmer under Snow Leopard. Any other difference you have noticed in the new MBA?

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MacBook Air :: External Monitor/frame Rate?

Mar 6, 2008

'm using my MBA to watch movies on my fullhd TV.

I use the dvi interface to connect to it at 1920 x 1080.

The problem is about the frame rate that after 10 / 15 minutes of flawless palying, drops consistently. I've tried VLC and QT with Perian but the problem is the same.

The only way I can use it, is activate the mirroring function and keep the resolution to 1280 x 800.

The strange fact is that the cpu is quite free and the temperature never goes more than 62 celsius.
I think that the problem could be an overheting of the video adapter. The fan, while I watch movies, is stick to 6200 rpm.

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Jun 30, 2014

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Is there even such a thing as an ethernet transmit rate, or am I creating my own vocabulary?

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Dec 29, 2010

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Jan 26, 2009

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Oct 20, 2009

I have a macbook unibody 2008 2.4, I ungraded to snow leopard, Id say for the past 3 months any time I open up safari or firefox after I have 5 tabs open the computer runs slow as can be. The computer when I scroll the little pinwheel pops up before I can do anything, it has gotten so bad the pinwheel has to pop up when I type more then 5 words. It has gotten so bad that even after the browser is closed I have to reboot my computer before it will run normal again. I know its not my ram I upgraded to 4gb of ram and I do clean out history and defrag on weekly basis. Is there any solutions that wont require a reboot.

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Dec 5, 2009

I just bought a 13 inches alum macbook pro...I'm wondering why does it run @ 2K rpm even when my comp is freezing ( like 25C)...I used to own a white macbook and most of the times it was running @ 1K..Never saw my new macbook with less than 2K rpm...With 2K, I can hear the fans so it's a little annoying

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Mar 22, 2012

I've had my MacBook Pro for a little less than a year and it has 4gb of ram but i have never seem my computer have even 2gb of ram available. With Safari up and itunes it almost consumes all the ram, is this normal? I don't believe it should be. Do i have too much crap on my computer?

Info:
MacBook Pro, Mac OS X (10.7)

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Apr 10, 2012

My fan seems to run all the time and I don't know why. I have a white macbook.

Info:
MacBook, Mac OS X (10.5.8)

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MacBook Pro :: Runs Slow And Uses A Lot Of RAM?

Dec 2, 2014

Problem description: My computer is using a lot of RAM. Wondering if there’s a hardware issue, or a software issue, or something else. I currently have no programs open in the Doc, besides EntreCheck. and the RAM is showing about 75% used. What I can do to speed it up and make it more functional, and efficient for doing design work. I recently upgraded from the original 4GB RAM (2x2GB), and from the original HD to a 512 GB SSD drive, and upgraded to Yosemite. Perhaps that was too much for this machine?

I have a recent back-up, I'm open to saving user files and starting from scratch with the current hardware, etc... but would need some direction on how to do this. I did upgrade myself using Apple provided instructions.  

Here are the EntreCheck results:  

EtreCheck version: 2.0.11 (98)
Report generated December 2, 2014 at 12:45:57 PM EST 
Hardware Information:
    MacBook Pro (13-inch, Early 2011) (Verified)
    MacBook Pro - model: MacBookPro8,1
    1 2.3 GHz Intel Core i5 CPU: 2-core

[Code] ......

Info:
MacBook Pro (13-inch Early 2011), OS X Yosemite (10.10.1)

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I am getting a pop up "Are you sure you want to shut down your computer now?".

The one we get, if pressed the power button to switch it off?. The problem is not consistent and mostly I get if left inactive for some time(random). I have run the hardware test(installer DVD and pressing D) without any issue found.

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Dec 29, 2009

I have seen this question answered before but can't find it in the archives. Almost immediately after starting to use the laptop the fan starts running and doesn't quit until you put it back to sleep or turn it off. Any ideas on why this is happening and is it harmful to the computer in the long run?

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