Question about Apple iMac Desktop

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I have a iMac (non Aluminum) running 10.6.6. when ever the unit goes into sleep mode, it will restart upon wake. I created a new user to test, and that user does not have the same problem.

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Either reinstall the lastest combo update or reinstall mac osx

Posted on Jun 09, 2011

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Posted on Jan 02, 2017

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What would be my best option to restore missing files and undo what she has done, to prevent going into sleep mode and not coming out?


It sounds like you have a virus.
Go to Microsoft website and download and run security suite.
Then to fix sleep mode check your shutdown and sleep settings (sounds like they were altered)
Run Malwarebytes its a free program you can download from google.
After doing this should be better but keep Malwarebytes and run monthly.

Dec 10, 2016 | Dell Computers & Internet

1 Answer

Monitor slow to wake up


A computer uses sleep mode to save power and save certain key functions so that users can resume work quickly without waiting for the computer to completely restart.
There are usually at least two types of sleep modes: an ordinary mode in which the current state of the computer is kept operational, and a deeper hibernation in which current settings are saved to the hard drive.
When a computer does not leave the sleep mode, there is most likely a problem with power settings.
Power Button Use

Some sleep modes, especially the hibernation modes, remove the ability for the computer to sense outside movement.
If the user puts the computer into hibernation, then typing on the keyboard or moving the mouse will not wake it, even if these actions work in a light sleep mode.
The only way to wake the computer up is to press the power button.

Power Settings
Computers have power settings that tell them when to perform certain actions, including powering down and going into sleep mode.
Normally, computers will do this automatically when they have low battery power, but if the settings are changed it is possible the computer will only exit sleep mode when connected to a power adapter.
Users can change power settings themselves to more appropriate levels, if necessary.

BIOS Settings In BIOS (basic input/output system) mode, a PC shows not only the last actions that triggered the computer to go into sleep mode, but also what wakes the computer up from sleep mode.
Typically several devices, including keyboard and mouse movement, are listed.
However, if the computer is not programmed to wake up from sleep mode when these devices are used, it will stay unchanged. Users can add or remove devices from the BIOS system itself.

Vista Problems
Microsoft Vista has been known to develop several errors associated with the ability of the computer to wake up once it has gone into sleep mode.
If the user has Vista, it is possible an internal error, possibly connected with the USB ports, has caused the computer to remain in sleep mode.
Users can fix these malfunctions by downloading "hotfixes" from Microsoft's website.

Video Card or Screen Problems
If the monitor refuses to wake up from sleep mode but all settings appear applicable, then the problem could be with the video card or the screen itself.
In this case, the computer is resuming activity but the monitor cannot show it, so it looks like it is still asleep.
The user should make sure the monitor is working properly and make sure the video card is not malfunctioning.


You should also check ram Hard Drive & vga lead
WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL.
http://www.kitchentablecomputers.com/static.php - rules
Test all power and data leads that attach to your hard drive IDE,SATA
the leads from your (motherboard to your hard drive) make sure they have secure dust free connections and are not faulty
if its a 40 pin flat ribbon type it will be the first to fail
make sure all leads that are attached to your drives dvd\cd and floppy have secure connections and are not faulty
even something as small as a faulty electrical fan and its lead can cause you problems
computers need all power and data to continue through every working device and to have an end so any faulty leads will end up with a computer error
Check your RAM.
The RAM is located in the middle of the motherboard.
There are tabs that you can push to release the RAM.
Remove it and put it back in place until the tabs pop out.
Loose RAM can cause your computer not to start properly where you want to see a video signal.
Remove the memory modules from their slots.
Take the opportunity to clean the slots on the motherboards and the memory module connectors.
Use compressed air to blow dust away and clean contacts with a soft cloth.
Do not use a metallic vacuum cleaner if it touches any component it may create a short and cause damage to the motherboard or other components.


Do not use solvent that may attract dust and never poke things like cotton buds in to slots. lightly rub an alcohol (Methylated Spirits) on a cloth not to hard let the alcohol do the work on the copper gold or silver tabs and r
Allow the pins to dry.
They will air dry in a matter of minutes.
Make sure your graphics card is securely seated with no dust built up or in the socket
if you remove your graphics check the socket to make sure its dust free
Restart your computer then reinstall it this should activate found new hardware wizard
Check the vga lead for secure dust free connection or try another vga lead.

Aug 11, 2013 | HP Computers & Internet

1 Answer

Imac will not wake from sleep


Though not too common, this does occur every once in a while on many Apple desktops/laptops. Usually an anomaly in the running processes gets stuck and prevents the system from awaking while sleeping.
To kill the processes, press and hold the power button for 7-10 seconds (or until the system powers off). Wait about 10 seconds and then power on the Mac.
I recommend performing a system update after logging onto the Mac and downloading any system & application updates available (and restart, if necessary, to complete).

Aug 11, 2010 | Apple 20" iMac Desktop

1 Answer

Slow to start after being in sleep mode


Your hard drive is spinning down and is slow to respond. Some of the old Fujitsu drives were known to do this. I would check your power saving settings in display properties and adjust it so the drive is not powering down.

Apr 26, 2010 | Apple 24" iMac Desktop

1 Answer

Apple mac will not stay in sleep mode


Make sure you do not have wake up on lan enabled in the network settings a good way to even do this is unplug or disconnect the thing from the internet. Wake up on land will wake the computero ut of sleep mode each time a packet is delivered to it.


Thanks I hope this helps.

Dec 13, 2009 | Apple iMac G5 MA064LL/A Desktop

1 Answer

Laptop goes into permanent sleep mode, etc


If you can restart it and it starts up fine, then I would go into the power settings and disable sleep mode. Every computer is different on how to wake a sleeping computer, so you could read through your manuals and find out for yours, but I just disable sleep mode on all computers so i dont have to hassle with it.

Dec 30, 2008 | Computers & Internet

1 Answer

Can not delete unwanted schedule


Remove the batteries and any power source for 10 minutes. This should go back to factory defaults. Sounds like a stat problem honestly. I would exit the program and change temps manually at all times.

Aug 03, 2017 | Heating & Cooling

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