Why is my MacBook screen flickering? MacBook won't boot (freezes on boot) - what to do Screen flickers on macbook pro
Fair, not overpriced or understated. There should be prices on the Service website. Necessarily! without "asterisks", it is clear and detailed, where it is technically possible - the most accurate, final.
With the availability of spare parts, up to 85% of complex repairs can be completed in 1-2 days. Modular repairs take much less time. The website lists the approximate duration of any repairs.
Warranty and liability
Any repairs must be guaranteed. 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 of the success in Apple repair is the quality and reliability of spare parts, so a good service works with suppliers directly, there are always several reliable channels and your own warehouse with proven spare parts of current models so that you do not have to waste extra time.
Free diagnostics
This is very important and has already become a good form for the service center. Diagnostics is the most difficult and important part of the repair, but you shouldn't pay a dime for it, even if you don't repair the device as a result.
Repair in service and delivery
A good service values your time and therefore offers free shipping. And for the same reason, repairs are carried out only in the workshop of the service center: correctly and according to technology, it can only be done at 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 so that you can be in time before and after work. Good service works both on weekends and on 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
Age and experience of the company
Reliable and experienced service has been known for a long time.
If a company has been on the market for many years, and it 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 SC are being restored.
We are trusted and transferred by other service centers for difficult cases.
How many masters in directions
If you are always waiting for several engineers 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 over immediately.
2. You are handing over your Macbook to a Mac repair expert. He knows all the secrets of these devices
Technical literacy
If you ask a question, a specialist must answer it as accurately as possible.
So that you have an idea of what exactly you need.
They will try to solve the problem. In most cases, the description tells you what happened and how to fix the problem.
You were quietly working when suddenly a blue screen appeared on your MacBook? This is a rather serious problem. It is important to react as quickly as possible, because the longer the equipment remains inoperative, the more difficult and expensive it will be to repair it. Please contact our service center for help. First of all, we will conduct a comprehensive diagnostics of the MacBook absolutely free of charge in order to determine the cause of the malfunction.
Factors provoking the appearance of a blue screen
If you see a blue screen on your MacBook Pro, there are several reasons. Consider all possible options so that you can draw conclusions about the breakdown:
1.A blue screen on a MacBook Air can indicate that there is a problem with drivers or various programs such as antivirus. If it begins to malfunction, this leads to the appearance of defects in the image output;
2.The blue screen of death when loading a MacBook often appears as a result of overheating. Due to prolonged use, the MacBook cooling system becomes clogged. There are several ways to prevent this problem - firstly, it is necessary to follow the recommendations for its use, and secondly, it is advisable to regularly do preventive cleaning;
3. A blue screen on a MacBook may also indicate that the RAM is faulty. This is where temporary commands and all the necessary data are stored for their processing by the central processor. Failure in its work leads to various system errors. In order to resume working, it will be necessary to replace the RAM;
4. If there are difficulties with the Mac image, this may indicate that the north bridge is out of order, so the monitor does not display information. He, the bridge, is one of the main elements of the chipset, which is responsible for working with the video card, processor and RAM. As a rule, it fails due to overheating or short circuit. The situation can only be corrected by a complete replacement of the component. This is a rather complicated procedure that requires high professionalism, so you should not replace the bridge yourself, as this can cause more harm, and it will be much more difficult to restore working capacity;
5. If a MacBook jumps on a laptop, it often happens as a result of moisture getting into the middle of the device. The liquid is rather negatively reflected on the performance of the Apple MacBook, as it can cause corrosion.
Why is my MacBook screen flickering?
If the MacBook screen is flickering, usually the malfunctions are hidden in the following:
1.the loop is damaged;
2. the MacBook screen blinks and blinks if there is poor contact of the ribbon cable with the board;
3. the same happens if the matrix itself fails;
4. the video card is faulty. In this case, a complete replacement of the chip will be required.
MacBook screen twitches and ripples when opening and closing.
The most common reasons in this case are:
1.the loop is damaged;
2. poor contact of the loop with the board. In this case, the restoration of the connector will help.
If you encounter a problem, the display is blue, go to our service center. We will quickly and efficiently repair MacBook Pro, MacBook Air, as all original components are in stock.
At the end, we will definitely test the laptop for performance. It only takes 5 to 30 minutes. You can be absolutely sure that the laptop will work like new, and this will also be confirmed by a guarantee!
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Important: Promotion! Reduced price by 50% marked with the word "Promotion", valid until the end of this month
1. As a spare part for a MacBook from a copy; |
Price installation details in our service center: |
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| Name of spare parts | Price in rubles |
Price installations in rubles |
| Screen for Macbook Air 11 " | 5000 | 1900 |
| Screen for Macbook Air 11 "with cover | from 6000 | 1900 |
| Screen for Macbook Air 13 " | from 5900 | 1900 |
| Screen for Macbook Air 13 "with cover | from 5500 | 1900 |
| Screen for Macbook Pro 13 " | 4500 | 1900 |
| Screen for Macbook Pro 13 "with cover | from 6400 | 1900 |
| Screen for Macbook Pro 15 " | from 7600 | 1900 |
| Screen for Macbook Pro 17 " | from 7500 | 1900 |
| Screen for Macbook Pro retina 13 "with cover | from 8600 | 1900 |
| Screen for Macbook Pro retina 15 "with cover | from 9600 | 1900 |
| Safety glass | 3500 | 1900 |
| CD and DVD drives | 2300 | 880 |
| Keyboard | 2900 | 880 |
| Hard drives | from 2900 | 880 |
| Power connector | 1200 | 880 |
| North bridge | from 600-3000 | 1900 |
| South bridge | from 600-3000 | 1900 |
| Video card | from 900-3000 | 1900 |
| RAM 4GB | 1900 | 880 |
| Motherboard repair | - | from 900 |
| Corrosion / impact recovery | - | from 900 |
| Plume | from 800-1500 | 880 |
| USB connector | 1900 | 880 |
| Battery | from 4900 | 880 |
| Become our regular customer and get a discount on our special. | ||
| Operating system problems | ||
| Installing the operating system | 1500 | |
| Virus removal | from 900 | |
| Installing programs | 900 | |
| Data recovery | from 900 | |
| Prevention | ||
| Standard - cleaning the cooling system, cooler, replacing thermal paste, cleaning the entire laptop with compressed air. | 1500 | |
| Economy - cleaning the cooling system, replacing the thermal paste. | 950 | |
| Corrosion recovery | from 900 | |
In a previous article, I wrote about the steps to take. I think it will be fair if a similar article appears about the MacBook.
After all, what could be worse than the situation, when your MacBook won't boot, and you clearly realize that all your information remained on it, on the accumulation of which hundreds of working hours were spent.
In this article, I will outline an emergency plan when your MAC flatly refused to start. It is not at all necessary to perform absolutely all of the listed actions. But you still need to act.
If your MacBook won't boot or freezes on boot, this could be due to:
- hardware problem (hdd, memory, controller, processor, etc.);
- OS X issue (e.g. upgrading to El Capitan)
- newly installed hardware (disconnect all USB devices)
As with the iPhone that won't turn on, the first step is to make sure the MacBook battery isn't drained or the charging is out of order.
If, nevertheless, something is displayed on the screen, or even the boot process begins (which eventually freezes on a spinning disk or stops altogether), you should try to follow the steps described below in the order they follow.
- If your MacBook is frozen and requires a restart -
- Need to create a bootable OS X USB stick? -
- After updating OS X MAC hangs on white screen -
- More details about the different boot modes are written -
- You do not know what the screen that appeared when loading the MAC means -
STEP 1: Boot into Safe Mode (Safe Boot)
First, try booting your MacBook in Safe Mode, which limits the checks and loadable functionality that the Mac runs on startup. I do not guarantee that after starting in this mode, your MAC will suddenly start working as before, but it's still worth a try.
Shut down your MacBook and then turn it on while holding down the shift key. Booting in Safe Mode can take a long time (if the computer boots at all), so be patient.
If you want to know what exactly happens when booting in safe mode, you can boot your MacBook by holding down shift + Command + V, which in turn will launch safe mode + verbose mode on the MAC.
Verbose mode (verbose mode) Is an optional boot mode for the operating system (including OS X, Windows, Linux), in which detailed information about the loaded drivers, software and processes occurring at the time of computer boot is displayed on the screen.
Be patient and attentive while loading your MacBook. If your computer does boot into Safe Mode, try simply restarting it from the top Apple menu.
If the MacBook boots now in the usual way, we will assume that the situation has been fixed and now everything is fine. If the MacBook does not boot, proceed to the next step.
STEP 2: Download Disk Utility
There can be a ton of reasons why your MacBook freezes at startup. But let's check now and then discard or try to fix the cause of your MAC hard drive malfunction. The easiest way to check your hard drive is to run Disk Utilities(Disk Utility).
The first step is to turn off your MAC. If MacBook stuck on a gray (white, blue, pink ...) screen with a spinning disk, you need to force it (the computer) to shut down. To do this, press and hold the power button for 5-8 seconds.
To run Disk Utility, you need to get into OS X recovery mode. To do this, hold down the Command + R combination when turning on the computer.
If everything went well, you will be taken to a screen with the title MAC OS X Utilities(see the picture below). On this screen, click on " Disk Utility"(Disk Utility).
Then click on the name of the built-in hard drive in the left side of Disk Utility and start the verification process by clicking on Verify Disk in the lower right side of the screen. Wait for the end of the check.
If any faults are found, you will be prompted to fix them. Confirm your intentions by clicking on Repair Disk... After that, try restarting your MacBook again.
STEP 3: Target Disk Mode
As the saying goes, "it's better to have a titmouse in your hands than a crane in the sky." How are you doing with your data backups? Well, those data that were stored on your MacBook ... And now it does not start ... Sadness!
If the loss of data on a MacBook does not scare you, go straight to the next step. But if you are now in a cold sweat trying to remember whether you copied anything of value to other disks or flash drives, then here's another gift from Apple - EXTERNAL DISK MODE.
Target Disc Mode- a special boot mode unique to MAC computers that allows you to access your computer's hard drive without booting into OS X.
Using this mode, you can save data when your MacBook does not boot for any reason.
To start the external disk mode and access the contents of the MacBook hard drive, do this:
- Find another MAC computer. If you don't personally, ask your friends
- Connect both macs with a Thunderbolt cable
- Turn off your MAC. If necessary, hold down the POWER button for more than 5 seconds
- Hold down the T button immediately after turning on the MacBook and hold it until the Thunderbolt icon appears on the blue screen.
You just started External Disk Mode... This mode, roughly speaking, turns your MAC into an external hard drive. If everything went smoothly, an additional external hard drive will appear on your friend's MAC in Finder. Now copy and save whatever you need.
When you're done with the drive, you'll need to eject it in Finder like any other device. After that, disconnect the Thunderbolt cable and turn off your MAC computer (by holding the power button for more than 5 seconds).
STEP 4: Reinstall OS X
If none of the previous steps brought "relief", all that remains is to reinstall the OS X operating system. To do this, you need to boot the computer in recovery mode again, well, remember as in step 2. To do this, turn on the computer with Command + R held down.
Wait for OS X Utilities to load and select from the list Reinstall OS X... Follow the instructions on the screen until you completely reinstall the operating system.
If your MAC has not mastered OS X installations or has been running on a fresh OS for a short time, most likely your MAC has some more serious problems.
Such problems may arise due to recently installed new hardware (memory, hard disk, etc.). Check the new hardware for compatibility with your computer.
If you haven't installed anything in your MAC, you need to check the existing modules (hard disk controller, memory modules, etc.). But it is better to entrust such checks to the specialists of the service center.
Sometimes macOS computers won't boot correctly. Instead of the familiar logo in the form of a bitten apple and a loading indicator, the screen remains completely the same. In this case, the computer cannot boot, despite the sound signal of the start of work. Most often, the appearance of the "white screen of death" is due to the installation of an operating system update. Considering the fact that yesterday, December 13th, Apple had another macOS Sierra update, the instructions will come in handy if, after the update, your Mac cannot turn on.
There can be several reasons for problems with loading macOS, as well as their solutions.
One of the easiest solutions to the problem might be to reboot into Safe Mode. To do this, you need to restart the computer by holding down the key Shift until the Apple logo and loading indicator appear. After the computer has booted up, try restarting it again normally.
Resetting non-volatile memory (NVRAM)
NVRAM is a small section of computer memory that stores some of your macOS settings. NVRAM stores information about the choice of the boot volume, and at boot the operating system accesses this section of memory. If there is an error in NVRAM operation, a "white screen of death" may also appear at boot.
To reset NVRAM, you need to restart the Mac while holding down the key combination Command + Option + P + R ... You can release the keys only after you hear two beeps to turn on the computer. After that, the non-volatile memory will be reset and the computer can boot normally.
System Management Controller (SMC) Reset
Another way to deal with Mac boot problems is to reset the System Management Controller (SMC). This point should be resorted to only after all the previous ones have been tried, and they have not yielded results.In order to reset the SMC parameters, you need to turn off the Mac and connect the charging cable to it.
Turn on the computer while holding down the key combination Shift + Control + Option + Power a few seconds, then release all buttons at the same time. After that, the computer should boot normally.
Another way to eliminate the "white screen of death" on Mac is to boot into recovery mode and use Disk Utility. This will require:
- Restart Mac by holding down the keyboard shortcut Command + R to start recovery mode.
- Select Disk Utility from the list that appears on the screen.
- In the new window, select the hard drive and go to the First Aid tab to start the recovery.
During the recovery process, the system may show errors that it cannot cope with. If this happens, you may need to reinstall the operating system to restore the computer to work.
Recall that before proceeding with the reinstallation of macOS, it is worth creating a backup copy of all the necessary data stored on the computer.
Sometimes a question mark appears on a white screen when loading. This means that the Mac cannot find the boot disk. Reboot with the key pressed can fix the situation Option ... During the boot process, several options will appear on the screen, among which you need to select Macintosh HD. In the event that such a reboot does not solve the problem, most likely the hard drive is damaged and you should try to replace it as soon as possible.
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Since the new MacBook Pro models went on sale last month, a fair number of early adopters have reported serious graphics issues with the new products. Most of the messages were about 15 "models assembled in the configurator, but they also talked about the standard 13" and 15 "versions.
For example, a MacRumors visitor reported that his brand new top-of-the-line 15-inch MacBook Pro equipped with an AMD Radeon Pro 460 graphics card began exhibiting various graphics artifacts when encoding video using Adobe Media Encoder. It got to the point that the laptop eventually froze altogether.
The reader said that when he took his laptop back to the Apple store, where he wanted to replace it, the store employee told him that, most likely, the cause of all the problems lies precisely in the hardware. Later, the person said that he received a call from engineers from Apple's headquarters in Cupertino and tried to understand in more detail the details of the problems that had arisen.
“Apple called me from Cupertino. They put together a group of engineers to get to the root of the problem. I recreated the conditions under which my laptop would freeze while on the phone with company employees, and then sent the crashed system log files. They also said that they would like to receive my MacBook Pro with all the files on it so that they can better understand the issue. "
The main "symptoms" mentioned in the messages of the owners are associated with color flickering of the screen, blurring of the picture, the appearance of the picture in the form of colored squares and other graphic artifacts. Some of the affected laptops end up freezing completely.
Example of full-screen graphics artifacts on a 15-inch MacBook Pro with AMD Radeon Pro 460 graphics
The most commonly reported 15-inch MacBook Pro models with a touchbar and AMD Radeon Pro 460 graphics cards, however, several people reported that similar problems are encountered on 15-inch models equipped with standard AMD Radeon Pro 450 or AMD Radeon Pro 455 chips.
Another MacRumors reader shared a video of a blinking MacBook Pro with AMD Radeon Pro 455 graphics installed and two LG external monitors connected.
Until the end, it remains unclear whether this problem is software or really hardware. Problems most often arise when users launch video decoding applications like Adobe Media Encoder, or try to sync their large photo libraries with the Photos application, or use other Adobe applications like Photoshop and Lightroom.
Separately, it is worth highlighting messages that indicated flickering and graphic artifacts when launching new MacBook Pro models. Most often, owners marked them at the bottom of the screen. Later it turned out that the FileVault 2 function was to blame. Disabling this function in the settings solves the issue.
So far, all indications are that 15-inch MacBook Pro models with discrete graphics are most likely to experience problems, however there are several reports of problems with 13-inch models with integrated graphics Intel Iris 540 and Intel Iris 550, including the new 13 -inch model with a standard layout of function keys.
It should also be noted that not all owners of new "poppies" face these problems. Some MacRumors readers have speculated and hoped that the root of the problem lies in the operating system and that the hot patch can fix it.
It should also be recalled that some 2011-2013 MacBook Pro models have experienced similar issues in the past. Then it was about video distortion, its complete absence and unexpected system reboots. Apple responded by offering a free laptop repair program as well as a full refund. However, this did not happen before the owners filed a class action lawsuit against it.
Most likely, Apple is already aware of the problems that have happened, but so far it has not officially commented on them in any way. Users report that company representatives are calling the owners of problem laptops. The case is accelerated by direct calls to Genius Bar and Apple Support.
