Jsut turned on my mac and the fan is blowing really hard is this a problem

I just turned on my mac and the fan is blowing in over drive is this a problem how do i fix it

Depends. We first need to know your iMAc model to know if your have a problem or a feautre. For a start, you can do "About this Mac" and tell us what it says about your Mac OSX version and processor type:

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I turned my iMac on and the fan is so loud...never heard this before. any ideas?

I turned my iMac on and the fan is so loud...never heard this before. any ideas?

An SMC reset may fix it, although it may not prove to be a permanent solution:
http://support.apple.com/kb/HT3964?viewlocale=en_US&locale=en_US
If it re-occurs I'd suspect a failed sensor.

I have an Iphone 4s and i can't make a connection to my mac and other devices via bluetooth! Why is this a problem and how can i repair it?

I have an Iphone 4s and i can't make a connection to my mac and other devices via bluetooth! Why is this a problem and how can i repair it?

"I have an Iphone 4s and i can't make a connection to my mac and other devices via bluetooth! ":
That is correct.
"Why is this a problem and how can i repair it?"
Becasue this has never been a feature of iphone/ipod/ipad. There is nothing to repair.

I turned on my Mac and the screen stays white and nothing ever shows up., I turned on my Mac and the screen stays white and nothing ever shows up.

I have a 3 year old imac and turned it on the other day and the screen stayed gray and never moved away from it. Any suggestions on things to try?

Click on > Mac OS X: Gray screen appears during startup and follow the troubleshooting steps.

Just tried to connect my I-Pad to my new Mac and the iPad starts flashing trust this computer and the computer freezes after saying can't connect to this I-phone

Just tried to connect my I-Pad to my new I-mac and the I-Pad starts flashing with trust this computer, but it is too fast to catch and on the computer it says cannot connect to this I-phone....Computer then freezes and i have to do a force close...

What version of iTunes is on the computer?
Sync Your iOS Device with a New Computer Without Losing Data
http://www.howtogeek.com/104298/sync-your-ios-device-with-a-new-computer-without -losing-data/
Syncing to a "New" Computer or replacing a "crashed" Hard Drive
https://discussions.apple.com/docs/DOC-3141
 Cheers, Tom

The fan on my mac runs as soon as the computer is idle, sleeping or shut down, i have tried resetting the SMC but it doesn't work i have to turn off at mains stop the fan.

My Mac is 18 months old and the fan has decided to run as soon as the mac is idle, sleeping or shut down, as soon as i touch the mouse pad or keypad it stops, i have to turn it off at the mains to stop the fan running, i have also tried resetting the SMC but to no avail, please can someone help?

Startup - Gray, Blue or White screen at boot, w/spinner/progress bar
Startup Issues - Resolve
Startup Issues - Resolve (2)
Avast! Uninstall

Is it normal for the mac book air to run hot and the fan to be loud

I just bought my daughter a mac book air a couple of months ago and it is now running hot within two minutes of turning on and not doing anything. then the fan is loud running hard to cool it down. it does not stop. left it alone for 20 minutes. still hot and the fan is loud

It's not normal. Read Runaway applications can shorten battery runtime, affect performance, and increase heat and fan activity
Power or other problems related to unexpected system sleep, shutdown, lights or fans also call for an SMC reset.
Read and follow the steps.
Before Resetting the SMC
Try each of the following steps in this order before you reset the SMC. Test the issue after completing each troubleshooting step to determine if the issue still occurs.
Press Command + Option + Escape to force quit any application that is not responding.
Put your Mac to sleep by choosing the Apple () menu from the upper-left menu bar and then choosing Sleep. Wake the computer after it has gone to sleep.
Restart your Mac by choosing the Apple () menu from the upper-left menu bar and then choosing Restart.
Shut down your Mac by choosing the Apple () menu from the upper-left menu bar and then choosing Shut Down.
Resetting the SMC on portables with a battery you should not remove on your own
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if it's not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.

2008 Mac Pro Monitor loses picture, computer becomes unresponsive and the fans run fast.

My early 2008 Mac Pro is dropping the signal to the monitor and the fan on the back begins to run at max speed. I have to do a force shut down and start again. It will then run ok for several hours. This typically happens when it wakes up, I log in and begin doing a task. However, it has been known to do this at a random time. This has progressed to a once a day event mostly in the morning after it has been sleeping for several hours.
I pulled the cover when it did it last and pressed the diagnostic button. LED's for the GPU and PWRG did not light.
I am wondering if it is the power supply beginning to fail or if it is the logic board or, is it something else.
Can anyone help with this?
Thank you
Processor 2 x 2.8 GHz Quad-Core Intel Xeon
Memory 6 GB 800 MHz DDR2 FB-DIMM
Graphics ATI Radeon HD 2600 XT 256 MB
Software OS X 10.9.5 (13F34)

When using the Hardware Monitor software (from http://www.bresink.com/osx/216202/Docs-en/faq.html ) -- i emphasized the stuff in red
The sensor X shows the reading Y. Is this normal?
If you want to find out whether a sensor value is within normal limits, please select the menu item Window > Show Overview (or press ⌘+1) and look for the limits in the third and fourth columns of the sensor table. They contain the known official limits Apple has specified for readings acquired at the given sensor locations. If no limit is given in the table, this either means that it does not make sense to specify a limit for this particular sensor (e.g. the battery capacity should not have limits), or Apple hasn't published any specifications for this sensor.
Note that all up-to-date Macintosh models automatically shut down or enter sleep mode if one of the readings exceeds a critical limit. For this reason it is impossible that your computer can be damaged in an overtemperature condition.
For old computers without temperature managment, no limits have been specified by Apple. In this case use the following limits as orientation:
Most older G3 or G4 processors are designed for a maximum operating temperature of 105 degrees Celsius (221 degrees Fahrenheit), measured at the chip die of the CPU.
G4 processors of type 7455 or later (typically used in Macintosh systems with 867 MHz and above) are designed for a maximum operating temperature of 65 degrees Celsius (149 degrees Fahrenheit), also measured at the chip die of the CPU.
Most desktop hard drives are specified for a maximum operating temperature of 55 degrees Celsius (131 degrees Fahrenheit). For exact information, use the Drive Overview window (⌘+8) to get the manufacturer and model code of your hard drive, and then direct your web browser to the manufacturer's web site to download the official data sheet for this drive. The temperature limits are always specified.
==================================
And don't forget you can look at the fan speeds (there are several in the Mac Pro) - that sometimes will give you a hint something abnormal is going on if the fans start running a lot.

My mid-2012 MacBook Pro has the fan constantly running. As soon as I turn it on. My MBP won't even be hot and the fan is running. How can I fix this?

My mid-2012 MacBook Pro has the fan constantly running. As soon as I turn it on. My MBP won't even be hot and the fan is running. How can I fix this?

If you are still under warranty and/or have AppleCare, call them. Let them deal w/it.
OOW try the following: http://support.apple.com/kb/HT1411 Apple Portables: Resetting the System Management Controller (SMC)

Suddenly, my phone isn't working, no internet, no phone, no texting, no music. Also, I tried to sync it to my mac and the syncing process won't start. I can't turn it off. Any suggestions?

Suddenly, my phone isn't working, no internet, no phone, no texting, no music. Also, I tried to sync it to my mac and the syncing process won't start. I can't turn it off. Any suggestions?

Frozen or unresponsive iPhone?

My BEATS speakers are connected to my Mac but I have no audio and do not understand how to turn off the speaker. I press the power button and not shut off. And the white light behind me indicating that this synchronized, does not turn off ever.

My BEATS speakers are connected to my Mac but I have no audio and do not understand how to turn off the speaker. I press the power button and not shut off. And the white light behind me indicating that this synchronized, does not turn off ever.

Hello Sabroso007
Check out the article below to troubleshoot the sound output to your Bluetooth speaker. Check in System Preferences > Sound to see what the output is set to.
OS X Mavericks: Set up Bluetooth audio devices
http://support.apple.com/kb/PH14217
Regards,
-Norm G.

HT1349 When I start my I Mac desktop the fan keeps running loudly. Can't get it to turn off.

When I start my I Mac desktop the fan keeps running loudly. How do I get it to stop?

Hello there, Jacquefromaz.
The following Knowledge Base article reviews the steps to perform a reset of the System Management Controller (SMC):
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/ht3964
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

Since Mavericks was installed I amd having trouble streaming and the fan kicks in and stays on when I am watching stream in features

Since I installed Mavericks I am having trouble streaming and the fan turns on and stays on shortly into watching a film on line.
Also the screen breaks up into lines and colors with no image in the middle of viewing a film sometimes several tomes.

Hi Mudra,
Thanks for visiting Apple Support Communities.
If your fan is running and you're noticing video issues when streaming video, I'd suggest first trying to reset your system, as described in this article:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Reset the system
You can reset the Mac's parameter RAM and SMC.
All the best,
Jeremy

IBook, Ram and the fan...

I recently purchased 512 MB of Ram for my ibook and, after I had installed it, on startup, the screen goes blank and the fan runs - that is until I turn it off by holding in the power button. I have had this problem before, but never so consistently. The problem has happened twice before, both times necessitating repair, but neither was brought on by a clear event. Occaisionally it will boot up and work for a few minutes, but then the screen will go blank and the fan will start up again. It now works without the memory in. Any suggestions or pointers? Much thanks.
iBook G4 Mac OS X (10.3.9)

I answered this one myself - apple sold me the wrong memory. I exchanged a box of PC 2700 for PC 2100 but they gave me a mismarked package of 2700.

Its just stops, freezes, and the fans come on.....

This the third time in 2 days. I have been using my Imac for a year with no problems. So I'm not freaking out but like an a** I didnt get apple care. Oh I have a business so I can buy it. Whatever. In cases any fellow mac-ers didn't know if you have a business you can buy apple care after the original warrenty runs out.
Anyways
My (baby) Imac will just freeze and about 30 seconds go by, and the fans come on like a helicopter. I let it sit for a cople of mins and saw no change. I just turned it off. Has anyone experianced this?

Shifty, could you please post where you got the information that you can buy AppleCare after your warranty runs out? As fas as I know, it can only be purchased before or on, the last day of your original warranty.
As to your fan problem, look and see if your serial number is among those in Apple's Repair Extension Program, if so, your repairs, which probaly will include a new Power Supply Unit and logic board, will be made under the extended warranty.
Please post back with the information,
thanks,
Miriam

Jsut turned on my mac and the fan is blowing really hard is this a problem

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