Why does it turn off when I start my mac. Macbook turns off. Alternative option - rearrange the RAM

If you want to check your PC computer for hackintosh compatibility, send us as detailed information as possible about its configuration (at a minimum - motherboard, processor, video card, controller hard drives, sound card, network interfaces) via or . The more complete the information, the more accurate our verdict will be. Although we are not able to advise you on every step of the hackintosh installation process, we will try to help you with a link to a Russian or English manual on this topic.

A question was sent to us:

Hello, I’ve read all the posts in your wonderful section about hackintoshes, but I haven’t encountered my problem.
I already have mac os x retail installed using Empire EFI and MyHack and updated to 10.6.6 Motherboard— ASUS P5QD Turbo, percent Intel Core 2 Quad, video GeForce GT 240. Everything works just fine except for one thing, but when the computer goes into sleep mode, it turns off the monitors, clicks the hard disks, and does not turn off the cooler, and continues to work as if loaded with something. The sleeper emerges normally. And one more problem is how to enable normal operation of processor energy saving.
Thanks in advance for your answer!

Welcome!

Problems with the slip come to the fore among those happy owners of working Hackintoshes for whom all other obstacles Mac installation OS turned out to be successfully overcome. It must be said that setting up the sleep mode is sometimes much more difficult than installing the Hackintosh itself. This is due to the fact that the normal operation of the slip is influenced by too many different factors. Let's list the main ones:

• the slip is unlikely to work without native power management via AppleIntelCPUPowerManagement.kext. Namely, most manuals advise blocking or removing this driver, because it causes an instant kernel panic when loading
• in turn, native power management will not work without enabled HPET (High Precision Event Timer)
• in turn, HPET will not be able to start without manually fixing the system boot loader DSDT table
• in turn, to edit the DSDT table, it is not enough to get it (for example, through EVEREST), you also need to know what changes to make there. The most important - fix the processor section
• in turn, in order to enter the correct values ​​into the processor section, you need to calculate them using special tables and calculators, looking at the official specifications for the processor. This is especially true for your processor because Quads have never been used in any real Mac (unlike a Core 2 Duo or Core i3/i5/i7)

Do you think that's all? Not at all! The operation of the slip can also be affected by:

• Mac model incorrectly specified in smbios.plist
• USB devices not fully registered in DSDT
• incomplete methods for falling asleep and waking up in DSDT
• crooked drivers that prevent individual devices from falling asleep

If you are interested in continuing the topic, then read this thread on the AppleLife forum. We advise you to thoroughly understand your sleep schedule yourself only if you have a wagon of free time, two wagons of enthusiasm and three wagons of patience;) This is one of the most confusing and complex areas of hackintosh science.

It is unlikely that anyone will argue with the fact that Apple technology is of high quality and reliable. It is worth noting that most modern and recently released laptops from other manufacturers are much inferior to the MacBooks of 2008. All available models in the line work without failures or freezes, but this does not guarantee uninterrupted operation of the device. Sometimes unexpected situations happen. This is exactly what this article is dedicated to. Let's look at the reasons why your MacBook may not turn on, and how to fix them.

How can you tell if your MacBook won't turn on?

In order to understand that the equipment does not turn on, you do not need to have skill or any special knowledge. When loading, it is enough to pay attention to what is drawn on the screen. If an icon appears in the form of a gray folder with an exclamation mark on it, then there is a problem with the laptop. There is no need to panic right away. If there is no system failure, then laptop technologies are capable of protecting all the data on the hard drive.

How to reset settings?

If a slight freeze occurs and you don’t want to spend a lot of time with recovery, you can use the EFI memory quick rollback function. All data after this will not be deleted and will remain on the hard drive. What needs to be done for this? First, turn off the laptop by holding down the Command-P-R-Option buttons and pressing the power key. It is worth pressing on them until the loading screen appears. This will quickly get rid of freezes, the memory will be cleared, and the operation of the MacBook will be completely restored. In the future, to avoid such troubles, it is better to do backup copy computer and place it on any cloud storage. Then, in the event of an unexpected failure, it will be easy to restore all data.

If after such manipulation the laptop still does not start, then you need to check the condition of the hard drive, as well as how the cable is attached to the motherboard.

Possible reasons

Before choosing ways to solve the problem, you need to determine why the freeze occurred. The question of why the MacBook won’t turn on will bother every owner who finds himself in this situation. What caused the software to turn off: a system failure, a memory or processor error, or some other problem? In addition, a breakdown could occur as a result unstable work operating system. Often such a reaction occurs in a laptop during the update process. Sometimes this happens when you connect an incompatible device to a MacBook. This problem can be easily solved - just turn off all additional equipment.

Fixing the problem: first method

First of all, you should use safe way turning on the laptop - Safe Boot. What is it for? When working with it, the MacBook only downloads software that has been verified and installed from certified sources. In order to turn on the laptop in this mode, you need to press the Shift button and then carry out the usual manipulations. Unfortunately, the download process can be long, but you shouldn’t rush or interrupt it, because all data should remain unharmed.

If the user needs to do a detailed download in order to understand why the failure occurred, then they should start turning on the laptop in the usual way, additionally holding down the Command, Shift and V keys. Then the MacBook will boot into safe mode with the opportunity to see all the details of the launch. In other words, Verbose Mode is additionally activated. What does this mean? This method download allows you to find out all the information about utility and driver files, as well as see all the errors that occurred as a result of their operation.

If after such a launch the laptop functions normally, then it can be loaded as standard. But sometimes this method does not help solve the current problem, then you need to proceed to the second option for troubleshooting. If after this the MacBook Pro does not turn on, what to do, you can understand further.

Fixing the problem: second method

Of course, a laptop may freeze and not turn on for many reasons. If we assume that the problem is with the hard drive, then you can use the Disk Utility program to check its status.

First of all, you need to turn off your laptop. If the display shows a gray/blue/other color screen and this cannot be done, you will have to forcefully turn off the power. To do this, just hold down the start button for 7 seconds.

Now you can open recovery mode. It is from this that you need to launch Disk Utility. How to do it? You need to hold down the MacBook's power button, as well as Command and R at the same time. After this, the user will see a screen with utility icons installed in the operating system. You need to find the Disk Utility program and run it. Now you need to find the name of your hard drive on the screen and enable checking it. After finishing, you need to fix all the problems and restart the laptop. However, if the MacBook turns on and off, and the methods described above did not help, then proceed to the next step.

Fixing the problem: third method

If the user has made a backup copy of documents, but cannot get to it due to a failure in the MacBook, then the third method will suit him. You need to enter the mode external drive, which is called Target Disk Mode.

How to launch it? A second MacBook is required. It is needed to connect them with one cable. Now you can turn on your own laptop. If any problems arise, you can hold down the power button for a few seconds until the logo appears. Now you immediately need to press the T key. Keep it in this state until the inscription appears on the screen in the form of Thunderbolt. External disk mode has started. On this moment a laptop is actually just that, and not a traditional computer. If the download is successful, you will see new hard disk. Thanks to this, you can easily transfer the necessary data to this medium. You are now allowed to restore your laptop. Even if the information is deleted from the main disk, it will remain on the new secondary disk.

Fixing the problem: fourth method

If none of the methods described above could help resolve the problem and its results, and the MacBook screen does not turn on, then the last option remains - reinstalling the operating system. In order to do everything correctly and not end up with a crash, you need to enable the laptop recovery mode. How to do this is indicated above in the article: you should press the MacBook start button while holding down the R and Command keys.

After this it will turn on operating system. You need to find the Reinstall menu. A dialog box will open. You must follow all the instructions described in it. Now the question of what to do if the MacBook does not turn on should resolve itself.

Mac computers with operating system macOS system on board are the standard of reliability and performance, but even despite this, no one is immune from force majeure circumstances, due to which the operating system may not load (an apple on the screen) or freeze upon startup. In this article we will talk about typical faults and ways to eliminate them.

In contact with

Absence Mac downloads or freezing during macOS startup can be due to three main reasons:

• a problem with the software or its update;
• a problem related to a technical component (SSD, HDD, RAM, processor, mother memory, controller, etc.);
• new equipment (needs to be disabled). The cause could even be a regular USB flash drive or USB key.

If the process of launching and loading macOS has begun, but freezes at certain stages, for example, on Apple, then you need to go through all the points below in order in the given algorithm of actions.

1. If MacBook, iMac does not start due to (after) installing an update

Any user Mac time updates the operating system on the computer from time to time. First of all, it's free, and besides, successive releases of macOS provide new features, speed up the device, and better unlock its potential. But sometimes, after trying to update their operating system, users encounter the same problem - the classic “Apple” light appears on the Macbook (iMac or other Apple computers) screen, but the operating system does not start to load. This is a known problem, and fortunately it is not difficult to fix.

2. Immediately after turning on or rebooting, hold down the key combination on the keyboard Command (⌘) + R.

3. Select the desired language from the menu that appears.

4. Login Disk Utility.

5. A disk will appear on the left side of the active window. It is usually called Macintosh HD. If we fix the problem, the disk will not be mounted. Its name will be displayed in light gray.

6. To mount a disk, there is a button in the top panel of Disk Utility " To plug" Click it and enter your password.

7. The disk name will be shown in the lower right corner, remember it. By default it is - disk2s1.

8. Close Disk Utility and in the top menu bar open the tab " Utilities" Select an application from the list of utilities Terminal.

9. In the Terminal window, enter the following command:

ls -aOl “/Volumes/Macintosh HD/Recovered Items”

Instead of Macintosh HD, you must indicate the name of your disk, if it is different.

10. The line “ No such file or directory».

11. Now you need to enter the second command:

diskutil apfs updatePreboot disk2s1

and press Return (Enter).

parameter disk2s1– this is the default disk name. In your case it may be different.

12. All that remains is to wait for the command to complete. After that, restart your Mac and it should boot normally.

2. Disconnect all devices connected to your Mac and try restarting your computer

How to force restart any of Mac computers we told.

3. Boot macOS in Safe Boot or Verbose mode

Safe Boot or simply “Safe Mode” allows you to run macOS with limited checks and functionality. That is, only the minimum that allows the system to function is launched. We perform all actions from a switched off Mac. To turn it off, just hold down the power button for 2-3 seconds.

MacOS in mode Safe Boot starts a little slower (if it starts at all), so don't rush to the next step until you're sure this doesn't work. To start your Mac in Safe Boot mode, simply turn on the computer while holding down the key ⇧Shift.

There is also an analogue of the Safe Boot mode - Verbose mode. The difference is that the latter allows you to display the entire detailed information about loaded processes, software and drivers. To start your Mac in Verbose mode, start your Mac while holding down the keys Shift + Command + V (⇧ + ⌘ + V).

If the Mac starts in Safe Boot or Verbose mode, you need to click on the  menu and reboot the machine in normal mode. A successful download means we are lucky.

If the Mac does not boot, then smoothly move on to the next step.

4. We resort to the help of Disk Utility

Our instructions are designed to first weed out the most common and easy-to-fix causes of Mac failure. At this stage, you need to make sure whether the problem is caused by inoperability hard drive or SSD, and will help us with this standard remedy represented by Disk Utility.

Shut down your Mac from any frozen state. Launch Disk Utility performed by turning on the Mac with the keys held down Command + R (⌘ + R). Here you will be in recovery mode.

In the list that appears " macOS utilities» select the item « Disk Utility" and click the " Continue».

In Disk Utility, select HDD in the left side menu and start the verification mode by clicking on the " First aid» at the top of the window.

After the check is completed, if any malfunctions are detected, the utility will immediately offer to fix them or will fix them automatically. After this, restart your Mac. If it doesn’t help, then proceed to the next step.

Fair, not overpriced and not underestimated. There should be prices on the Service website. Necessarily! without asterisks, clear and detailed, where technically possible - as accurate and concise as possible.

If spare parts are available, up to 85% of complex repairs can be completed in 1-2 days. Modular repairs require much less time. The website shows the approximate duration of any repair.

Warranty and responsibility

A guarantee must be given for any repairs. Everything is described on the website and in the documents. The guarantee is self-confidence and respect for you. A 3-6 month warranty is good and sufficient. It is needed to check quality and hidden defects that cannot be detected immediately. You see honest and realistic terms (not 3 years), you can be sure that they will help you.

Half the battle is Apple repair- this is the quality and reliability of spare parts, so good service works with suppliers directly, there are always several reliable channels and your own warehouse with proven spare parts current models so that you don't have to waste extra time.

Free diagnostics

This is very important and has already become a rule of good manners for service center. Diagnostics is the most difficult and important part of the repair, but you don't have to pay a penny for it, even if you don't repair the device based on its results.

Service repairs and delivery

Good service We value your time, which is why we offer free shipping. And for the same reason, repairs are carried out only in the workshop of a service center: they can be done correctly and according to technology only in a prepared place.

Convenient schedule

If the Service works for you, and not for itself, then it is always open! absolutely. The schedule should be convenient to fit in before and after work. Good service works on weekends and holidays. We are waiting for you and working on your devices every day: 9:00 - 21:00

The reputation of professionals consists of several points

Company age and experience

Reliable and experienced service has been known for a long time.
If a company has been on the market for many years and has managed to establish itself as an expert, people turn to it, write about it, and recommend it. We know what we are talking about, since 98% of incoming devices in the service center are restored.
Other service centers trust us and refer complex cases to us.

How many masters in areas

If there are always several engineers waiting for you for each type of equipment, you can be sure:
1. there will be no queue (or it will be minimal) - your device will be taken care of right away.
2. you give your Macbook for repair to an expert in the field of Mac repairs. He knows all the secrets of these devices

Technical literacy

If you ask a question, a specialist should answer it as accurately as possible.
So that you can imagine what exactly you need.
They will try to solve the problem. In most cases, from the description you can understand what happened and how to fix the problem.