What to do if your Mac won't boot and freezes at the Apple logo. macOS does not load or freezes when loading the Mac, the apple lights up and nothing happens. What to do? Imac won't boot

What could be more unpleasant than the situation when suddenly, for no reason at the most inopportune moment, your iMac does not turn on? In our age of dependence on computers, perhaps there is little. This unpleasant situation can be prevented. It is necessary to periodically clean the iMac from dust (this can be done at any service center that specializes in post-warranty service for Apple products) and connect a voltage stabilizer (or at least a surge protector).

If such a situation does occur, do not rush to take your iMac to a service center. In some cases, the problem can be solved on your own.

If the iMac turns on (a welcome sound is heard, the iMac hums as if it is working), but cannot start completely, then there are problems with the software. Try using Time Machine or boot into Safe Mode. Check the DVD drive, there may be a disc in it that is preventing the system from starting. If none of these methods is effective, then reinstalling the operating system is inevitable.

If the iMac does not turn on at all, first of all, make sure that the problem is not in the outlet or cable (especially if there was a power surge - in this case, the power supply could also burn out). Otherwise, the breakdown occurred inside the monoblock. The hard drive or RAM may have failed. There may be a more serious problem. In any case, it will not be possible to determine, much less eliminate, this on your own. You need professional help.

Service centers, especially those that specialize in aimags, often bring all-in-one PCs with the problem “iMac won’t turn on.” In such workshops, specialists often carry out free diagnostics in a matter of minutes and identify the cause of the breakdown.

Be careful when choosing a service center. Choose those that have basic spare parts in stock. In this case, the iMac repair will be carried out as soon as possible, and you will not have to part with your computer for a long time. When replacing spare parts, make sure that they are original and not Chinese counterfeits. Otherwise, after a while you will have to contact the workshop again.

Take care of your iMac, this will significantly reduce the likelihood of it breaking. If you notice that something is wrong with it (it starts to buzz louder, freezes, suddenly turns off), then rush to immediately show it to professionals. This way you can prevent serious damage and never say the phrase “my iMac won’t turn on.”

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If, after all, your iMac is broken. You can always call a taxi http://taxi-dring.ru and take your digital equipment to a workshop for repair.

Despite the fact that the iMac computer is a reliable device, it is still not ideal, and therefore it is not alien to various kinds of software and system failures. The worst failure, of course, is the lack of desire to turn on. Fortunately, this kind of behavior of the Apple iMac does not always indicate some kind of serious breakdown. In this article, we will tell you why your iMac won't boot and what you can do yourself to fix the problem in a given situation.

First of all, of course, we should diagnose the situation in order to understand whether we can cope with it on our own or not. And the main point is to determine the nature of the problem - if it is software, that is, related to certain system glitches, then, as a rule, you can fix it yourself. In a situation where the problem is hardware in nature, the cause is a malfunction of some “hardware” component, which means that service and expensive repairs will most likely be required.

How to understand that the problem is software?

There can be a great many system conflicts, as a result of which the aimac model A 1224 or any other model does not turn on or load, however, to eliminate the most popular ones, it is enough to do the following steps.

Checking the boot disk

If your iMac turns on but doesn't boot to the final stage, the first thing you need to do is check to see if your boot disk settings have gone wrong. To do this, as soon as the device starts to boot, press the Option key and check if the correct disk is being used to boot. The correct boot disk is Macintosh HD.

If you have a Macintosh HD disk installed as a boot disk, but the iMac still does not boot, then we are looking for the problem further - we are trying to activate safe mode. To get into this mode, you need to hold down the Shift key when starting the device. If you manage to get into safe mode, reboot from it and then, most likely, the computer will be able to boot into normal mode without any problems.

Disabling peripherals

Various kinds of disks, flash drives and other components connected via a USB interface that are not removed by the user when the iMac is turned off can also cause a system failure. To exclude this reason from the list of possible options “Why didn’t the iMac boot?”, we disconnect all peripherals that connect to the device via USB (even if there were no conflicts with this equipment before), and also do not forget to remove the disks.

Resetting the settings

Removed everything and turned it off, but your iMac still won't turn on? Don't be alarmed, all is not lost! We press the boot button again and this time, when starting the system, we hold down the combination Command+Option+P+R, this way we reset the NVRAM settings - this memory area is responsible for saving the set time zone, time and other system parameters, so don’t be surprised that after resetting, you will have to configure these iMac settings again.

Resetting the power controller settings

If you're still reading this article, it means your iMac still won't boot. Don't worry, we still have a couple of ways to get him to do it. First, we reset the power controller settings, this is done very simply - completely disconnect the computer from the network, wait 15-30 seconds, connect the network cable, wait 5-10 seconds and try to boot the computer.

Launch Mac in command line mode

And finally, the last desperate step, which, unfortunately, often leads to the need to reinstall the system, which means that some of your data may be lost. What needs to be done? When you boot the iMac, hold down Command+S, the command line will launch, enter the command “fsck-fy” into it - thereby you initiate a file system check, which will help eliminate existing software failures (if any, of course). After running the diagnostics, enter “reboot” on the command line and the PC should start booting.

Important point! If you are not ready to reinstall the iMac system, it is better not to take this step.

How to understand that there is a hardware problem?

As a matter of fact, if all the above measures did not help solve the problem, then most likely you are faced with a hardware problem. Another argument in favor of problems with the hardware is a complete refusal to turn on - that is, the download does not even start. However, nevertheless, before taking your device to the service, we recommend contacting Apple support; the chance that its specialists will help you is not so small.

If the support service is powerless, then we go to the service and hope that we will be able to get by, as they say, with little loss. The most “light” option is that the power cord is faulty. However, practice shows that more often the reason the iMac boots is due to problems with the power supply and video card, and sometimes even the hard drive suffers.

Let's summarize

So, if your iMac does not turn on, first of all, with the hope that in your case the problem is of a software nature, we consistently try to fix it, guided by our advice. If none of the tips help, contact Apple support. In a situation where its specialists are powerless, we take the computer to the service center and believe that we have not encountered a serious breakdown.

Mac OS is a fairly resilient operating system, largely free from crashes and freezes. However, even users of Apple computers encounter problems as a result of which the Apple iMac does not boot at all, or boots with system errors. In this case, the problem may be either software or hardware in nature.

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If your iMac does not start, you should first check boot disk: While booting, hold down the Option key and then select the disk with the operating system, by default it is Macintosh HD. In some cases, the problem can also be resolved by booting the system in safe mode. To do this, hold down the Shift key when starting the computer. If this method worked, then after rebooting Mac OS will boot in normal mode.

If your iMac won't boot and you only see a gray screen,All peripherals should be turned off. In some cases, the system may conflict with devices connected via the USB interface. In addition, the problem may be caused by installed computer components, such as the hard drive and RAM. If the iMac does not boot after upgrading/repairing these components, you need to check their compatibility with your iMac model.

If the problem is still of a software nature and iMac won't boot due to system crash, you should reset the NVRAM (or PRAM for older models). These settings are responsible for storing information such as the time zone, the selected boot volume, and the set audio volume, so after resetting them you may need to reset them to the necessary values. To reset NVRAM settings, you must hold down the Command + Option + P + R key combination; PRAM settings are reset using the same principle.

If the problem is with the hard drive AndiMac won't boot due to corrupted layout, you should start the computer in command line mode (Command + S during boot), and then run the command “fsck -fy”. This will check the file system and eliminate any possible errors. After the check is completed, you should run the “reboot” command to reboot. Be careful: you may need to reinstall the operating system if the recovery mode did not function previously.

In addition to the problems described loading problems may be due to damage to internal componentsiMac, such asGPU or power supply, but most often the malfunction is caused by the failure of the hard drive.

If the described methods do not help, you should contact a service center for a more complete diagnosis of the problem and its prompt elimination.

We are always ready to help you solve any problem.

Today, iMac is perhaps the most successful representative of All-in-One computers. However, even the ideal is not without its drawbacks: models released three to five years ago often became the cause of our concern: the complete absence of an image more than once made even knowledgeable engineers think, because there may be several reasons for this behavior of the iMac.

When working with an iMac, a black screen has plagued users for many years and is still one of the pressing problems with this computer.

It can occur for several reasons, both software and hardware, and below will be the most common problems and ways to fix them.

The most common software problem, with which encountered by users who updated to Mac OS 10.9 Mavericks(the problem most often occurs on this version of the operating system, although the possibility of its occurrence on other updates cannot be ruled out). If this failure does occur when updating your iMac, the black screen will not allow you to work with the system, since only the mouse cursor can be drawn from the entire graphical interface of Mac OS.

There are two ways to fix the problem: completely formatting the hard drive and reinstalling the system, or using safe mode to fix the problem. In the second case, you need to restart the computer while holding down the Shift key, after which Mac OS will boot into safe mode. Since the black screen on the iMac prevents you from seeing the interface, further operations will have to be carried out blindly.

For subsequent actions you will need a username and password. If you don't know your username, you can find it by starting your iMac in console mode (Command + S during startup) and using the command “is /users/” without the quotes. The last value in the line that appears will be the username. After this, you should restart the computer with the “halt” command.

First, you should wait for the loading (when the corresponding scale fills and disappears), and then press the first letter of the user name. It is worth noting that in case there are two or more users whose name starts with the same letter, the system will select the first one in alphabetical order. Since the problem is resolved for each user individually, to enter the desired account, you must enter the first few characters until the system switches to the desired user (for example, if there are accounts “AB123” and “AB456”, to select the second user, just enter AB4, after which the system will switch to the desired entry).

Then press the Enter key to confirm your choice - the system will switch to the password entry field. After this, you should enter the password and press Enter again, then the system will log into the account (again, without displaying any graphics). When all the steps are completed, just restart the computer in standard mode. If the actions were carried out correctly, the screen will work again.

A black screen can also occur when installing an operating system.(the installation process will freeze before completion and the computer will reboot). In this case, the issue is most likely a hard drive error.

If the iMac does not turn on, a black screen may indicate failure of individual computer components.Thus, such a malfunction may be associated with the failure of the graphics adapter or hard drive, or the display module itself. If the computer turns on and you hear operating sounds, or if the screen turns off on its own, the backlight may be faulty. In this case, the problem can be eliminated by restoring the backlight circuit or replacing the matrix, which is significantly more expensive (and there is no need to do this)

On iMac, a black screen may also occur when resuming from sleep mode, but this is only relevant for older versions of Mac OS and iMac from 2010. The problem can be resolved by updating the operating system or blocking entry into sleep mode.

In addition, there are problems with the matrix itself. In the case of iMac, black and white dots on the screen are common symptoms and are “treated” by cleaning the layers of the matrix from carbon deposits that appear after a certain operating time of the system.

If none of the above cases fits your description, but you still observeimac black screen when turned on, the cause can be identified using hardware diagnostics.

We have looked at the most common causes of a black screen on imac. If for some reason you were unable to resolve the problem on your own, you should contact a service center - any screen malfunction can be repaired by professionals in the shortest possible time.

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Apple is widely known for its high-quality, modern and reliable products. But any product created by human hands is not immune from breakdowns. And the so popular iMac all-in-one PCs are no exception. If, after pressing the start button, you find that the computer has stopped turning on or is not working correctly, then there may be several reasons for this problem.

The main reasons that the computer does not boot or does not work at all may be: problems with the software, power supply of the aimac, problems with external devices, RAM, or overheating of the device due to a clogged air conditioning system.

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In this case, first check its connection to the electrical network. Make sure there is no problem with the outlet. Is the device itself connected to the outlet correctly? Check the power cord and the power adapter for faults (broken cord, burnt out adapter, etc.). If everything is in working order, you should additionally do the following:

1. Disconnect all external devices (for example, printer, mouse, disk drive).

2. Unplug the power cord and wait 10-15 seconds.

3. Connect the cord while holding the power button.

4. Release the button and press again.

Computer still won't start? Try resetting all settings (return to default settings).

If all of the above measures do not change anything, it’s time to contact a specialist.

This problem may occur due to problems with the software, video card, or display itself. To resolve the problem, reinstall the operating system or replace the faulty parts at a service center.

White screen aimak - what to do

If the device starts working, but freezes and things don’t go beyond the white screen. Check all connected external devices and the presence of a disc in the drive.

The cause of the freeze may be the hard drive. Also one of the likely reasons is RAM. In this case, loading a system recovery program from a disk or flash drive helps. If these measures do not help, you need to diagnose the RAM for problems.

Black or gray screen

After pressing power, the aimac screen remains black. This means there is a problem with the motherboard, in particular the north and south bridge, or the video card. One of the reasons for such problems may be poor performance of the cooling system - dust or dirt has accumulated. A gray screen may indicate a software problem (needed software missing or software incompatibility).


Contact the service center

Incorrect identification of the causes of problems and subsequent independent elimination of them can lead to irreversible consequences, for example, after self-repair, often.

Our service is equipped with all the necessary equipment for accurate diagnostics of all Apple products. Only after determining the cause, the center’s specialists begin work. All our technicians have extensive experience in repairing all types of devices from this popular company.

And rest assured, we will do our work at a high level and in the shortest possible time. You will not have to regret that you chose us, because your aimak will work properly and without problems!