HT1776 Hi, my iMac screen goes to sleep but the fan stays on 24hrs and never stops?

Hi, my iMac screen goes to sleep but the fan stays on 24hrs and never stops? You can hear it running all night.
Appreciate any advice.I'm using Lion. Many problems started since using Lion!

The temps are a bit higher than I'd expect under normal circumstances, and too high while playing games, but what is the room temp where it is?
I def. think its a temp thing now. but why does it only raise when im playing games or watching videos online?
Games tipically press the CPU, Video Card, RAM, and everything else much harder than most apps.
It may be a Fan not working properly, or just dust buildup.
Boot off your Install Disk while holding down the *d key*, (not c key), then run the extended Apple Hardware Test. Some disks require you to use the Option key at bootup to select AHT. Some models have a separate AHT CD.
Report any errors it finds.

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You don't indicate what operating system the MacBook is using, but in general try the following:
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If covered by warranty. See:
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Choose the appropriate method.
Best.

Screen goes to sleep when watching full screen video in browser

Hey,
On my MacBook Pro, with Mavericks, I often watch MLB.tv, WWE Network or even Youtube videos on full screen. Since upgrading to Mavericks, my screen goes to sleep after the normal amount of time based on my power settings in the system preferences. In previous versions of OS X, if i had a video on full screen, whether it was with Quicktime, VLC, Safari, Chrome, etc. the screen would never go to sleep.
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I think you may want to point this out to Apple… it sounds like an oversight.
http://www.apple.com/feedback/
Can you set a 'hot corner' to disable the screensaver activation? It's less than ideal but it could save your sanity - just slide the cursor into the corner.
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IPod screen goes to sleep while playing

Hello,
I have what I believe is either the 6th or 7th generation iPod 120gig. I just picked it up used and it is in good condition.
The problem I have is, while I have it playing on my Bose system, the songs play, but I can't see what song is actually playing like my 1st generation iPod does. This one, the screen goes to sleep while the songs play. is there a fix for this possibly? I have many songs and it's always nice to just look over and see what is playing.
Thank you,
JG

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i

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Try a PRAM/NVRAM reset.
Resetting NVRAM / PRAM
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
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Why does my iphone 3gs screen go white after it goes "to sleep" for the first time after turning it on?
The screen isn't broken because it works after i turn the device off and back on, but after it goes black once, it's only white again.
But it takes the touches although it's only white, because I can answer my phone when I slide my finger on the bottom of the screen, eventhough there in not the button to see.
This is so weird. I have already done everything I can think of that might help. But I cannot think of anything that might be causing it, because nothing has happened to the device.

Let me know if I should start a new discussion instead of opening a new topic here.
My wife's iPhone is the same vintage as mine 3Gs, but has never had the battery problem. Its affliction instead is that it cannot detect WiFi networks unless it is quite close to the source. Often, when my iPhone not only detects but shows a maximum cells connection with a network, hers cannot detect the network at all. In contrast, her iPhone seems to detect ourcellular carrier just as well as mine does.
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IMac randomly goes to sleep / Previous Sleep Cause: -100

iMac (24 inch Early 2009, 2.93 GHz Core 2 Duo, Lion 10.7.3) randomly goes sleep.
No hot corners, never sleep setting.
It seems it goes to sleep more often when CPU is busy and graphic intensive jobs running (videos, gaming).
I cleaned up air ways by vaccume, but it did not help.
Temp monitor showed
CPU 55C
power supply 95C
northbridge 89C
graphic processer goes up to 86C
when it went to sleep for no apparent reason. Are those causing issue? If so what can I do?
/private/var/log/kernel.log says
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Any idea what this is?
Thanks!

I took the iMac to nearest AppleStore and they opened it and cleaned up inside.
After that, it has not yet gone to random sleep yet while I've been trying to reproduce heavy CPU/GPU load for ~1h (while I could make it happen in 15min this morning).
So far highest temp went down to:
CPU 55C             => 44C
power supply 95C => 72C
northbridge 89C     => 82C
graphic processer 86C => 70C
Tech at AppleStore bar didn't know what Sleep Cause: -100 is.

Screen goes to sleep even when viewing movies in full screen mode

Hi, I have adjusted my settings so my screen goes to sleep after 5 minutes which is ok. But it also does this when viewing movies in full screen mode.... Is this a setting somewhere? Thanx!

Welcome to the Discussions!
"When the computer is inactive" or "idle" means when YOU, the user, are doing nothing, neither using the keyboard nor the mouse. So you have to increase that 5 mins in Energy Saver.
Andreas

Hi I've just download os x mavericks 10.9 on my macbook pro the trouble is when i am on the internet my screen goes of it keeps saying put in your password how can i stop this every time the screen goes to sleep

hi I've just download os x mavericks 10.9 on my macbook pro the trouble is when i am on the internet my screen goes of it keeps saying put in your password how can i stop this everytime the screen goes to sleep

I don't know how you received an upgrade for iTunes. You make it sound like it was sent to you. At most your computer will tell you of a new version and you tell it to download it and install it. However, a computer will not do this for a version which is incompatible. iTunes 10.7 came out a few weeks ago but your computer would not notify you and even if it did, 10.7 would refuse to install on your computer. So this part isn't making a lot of sense.
Two ways to get the 'newer version' message. One is to open your library on a computer running a newer version, and then try to open it with an older version. Usually happens when the library is on an external and used with multiple computers. The second way is if you have multiple versions of itunes installed on your computer.
The newest (and likely the last) iTunes for OSX 10.5.8 is iTunes 10.6.3 which has been out for quite a while.
iTunes 10.6.3.25 - http://support.apple.com/kb/DL1575

Wifi turns off when screen goes to sleep - how can i disable this?

running 10.8.4 on MBA 2013
is there a way to keep wifi alive when the screen goes to sleep (automatically turns off)?
this is very annoying that i would have some internet connected application running (eg. a download) and then the screen turns itself after a timer and also cuts the wifi. this means i have to keep my screen on if i had a big file to download. is there a way around this? i cannot find any settings addressing this issue/option.
thank you.

edit:
i know there's the option "prevent computer sleeping when screen is off" under power adpter, but i would like it done while running battery.
thank you.

HT1776 Hi, my iMac screen goes to sleep but the fan stays on 24hrs and never stops?

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