Broken pixel channel. How to remove a dead pixel on the monitor. A few important points

How to remove dead pixels on a computer monitor, phone or TV.

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First of all, let's explain what pixels are, and what the word “broken” pixels means. The screens of our modern gadgets are made up of pixels, very small squares. You can find out how many pixels are on the screen of your computer monitor by right-clicking on it and selecting:

Parameters;
Additional screen options;
Permission.

Here is the set resolution, just, and shows how many dots - pixels, is currently on your screen. Moreover, you can independently change the number of pixels on the screen by increasing or decreasing the screen resolution. However, if you set it to a value that is not recommended, then disproportion and distortion may appear when projecting images.

Pixels also have their own components - subpixels, in the amount of three colors, namely blue, red and green.

The main color of a pixel is made up of the location of individual subpixels, and also from the direction of the light beam, which is different in power.

What do dead pixels look like?

The concept of "Dead Pixels" is too broad, and covers all sorts of pixel problems, from fading to dying. I will try to describe in detail specific problems with pixels.

Take a closer look at how your "Broken Pixel" looks on the screen. If this is a small, colored dot, for example, red or green, other colors are possible, then this means that the pixel is “frozen”, or, as they say, froze, and it is quite possible to stir it up.

But if this is a black or white dot, then this indicates that the pixel is covered thoroughly and it will be difficult, and most likely completely impossible, to reanimate it. Although, you can try.

In a modern monitor, an active matrix is used, where all the pixels are under the autonomous control of thin-film transistors (TFT, Thin Film Transistor). When they break, a black or white inactive speck appears on the screen - a broken pixel.

It does not change colors when changing pictures, because the personal transistor does not react to this change. Such "dead" pixels can only be restored by replacing the corresponding transistors, which is done in service centers, workshops; ordinary users cannot fix the defect on their own.

How to remove dead pixels on a computer monitor and mobile devices

There are quite a few online services and offline programs on the Internet that can revive a frozen pixel, in the case when the thin film transistor is just a little frozen.

An online check of the monitor for dead pixels can be performed on the website monteon.ru or on the website tft.vanity.dk
Checking the monitor with free and lightweight utilities IsMyLcdOk, Dead Pixel Tester or programs - UDPixel or AIDA64.

Fixing broken pixels online can be done on the JScreenFix-Fix stuck pixels service at www.jscreenfix.com. We go to the service and press the bright yellow button at the bottom of the screen, most often on the right.
After that, scroll down the screen and press the blue button - Launch JScreenFix. A window will open with randomly changing pixel colors. Set the window to the broken pixel and leave it for one or two hours. Such treatment in 50% of cases ends with success.

We remove dead pixels by mechanical action

If it was not possible to “wake up” a frozen pixel on the monitor using the program, then you can apply mechanical action to it, for example, tap on this place or put a click.

You can take a soft eraser and rub this place, that is, “massage” the problem area. However, do it without fanaticism, do not break the monitor, calculate your strength. A slight mechanical impact may well start the TFT.

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Dead pixels are one of the most pressing issues, often becoming a reason for a heated showdown with suppliers of LCD monitors, tablets and smartphones. Managers of fashionable stores are often in a hurry to disown this problem, referring to the regulations of official manufacturers. We will focus on what “broken” pixels are and how to deal with them one-on-one in this article.

Checking and treating dead pixels
Monitor, like a personal computer, we buy more than one year. But, unlike a PC, which can always be upgraded if desired, there is no way to improve the image quality characteristics of the hardware. That is why, when evaluating the functionality and picture quality of a potential candidate for the position of a home monitor, we approach the issue of choosing a model very responsibly, investing in a novelty to the maximum and for a long time.

And now, all the accents are finally placed, a brand new monitor is bought and connected, it shows all signs of life, pleases the eye with image quality and color depth. You are certainly satisfied with the purchase and everything would be fine, but something confuses, distracts your attention and does not allow you to perceive the picture in its entirety and entertainment. The gaze now and then slides down to a dark, light or colored dot, which retains its color regardless of the broadcast image. Well, get acquainted, gentlemen, you are extremely lucky: in front of you is His Majesty the “Broken Pixel”!

Problem
The image that we see and perceive on the LCD monitor as a whole is actually formed from many clusters of dots called "pixels". In turn, the entire color gamut can be achieved with just three subpixels - red, blue and green. In models of LCD monitors with an active matrix, an individual thin-film transistor (Thin Film Transistor - TFT) is attached to each pixel, the damage of which will appear on the screen as a black inactive dot, which is called a “broken” pixel. And in this case, the problem can only be solved by replacing the transistor in the laboratory and, alas, there is no alternative here.

If you observe a bright dot on a dark background - do not rush to despair! Quite often, the reason for the appearance of broken subpixels is their “hanging” in some intermediate position, which outwardly manifests itself in the absence of their reaction to a changing picture. You can solve the problem at home, without fear of harming the monitor, programmatically, or by performing some physical manipulations.

Why amateur performance if the monitor is under warranty?
An absolutely normal question that is asked by everyone who has already managed to get acquainted with our problem, but is not yet familiar with the likely reaction of the store. It turns out here, even despite the warranty obligations of the service, nuances and disagreements are very likely.

Defective pixels? - Complain to the Stockholm Arbitration!

The real reason for the dispute is the manufacturers themselves, who officially set the tolerance for a certain number of “allowed” dead pixels on monitors of the corresponding standards - the ISO-13406 regulation.

In accordance with accepted tolerances, monitors are divided into 4 classes:
1st class - dead pixels are practically excluded, warranty repair and replacement in case of detection is mandatory and is carried out immediately;
2nd class - the most common variant, allowing the presence of 2 defects of types I and II;
3rd class - budget models that allow the presence of 5 broken pixels of type I, 15 - type II, 50 - type III.
4th class - monitors of low quality, allowing the presence of 50, 150 and up to 500 (!) Type I, II and III defects, respectively.

Note:
Type I - white pixel visible on a black background;
Type II - black pixel on a white background;
Type III - red, blue, green pixels.

It becomes clear that despite the warranty, the annoying single white pixel in the center of the screen of the 2nd class monitor remains your problem, and the best way to prevent this situation is to connect and test the display before calculation or during the period available for exchange in accordance with consumer protection law.

Monitor check
A visual assessment of the image quality in the cabin often does not allow to make an unambiguous conclusion about the presence of broken subpixels, and even more so - to determine the presence of moire, to assess the readability of moving text, the response speed of the matrix and other significant parameters. And why, if it is much more reliable, easier and more efficient to check the monitor using specialized utilities that will allow you to get all the data in full, and most importantly, on time. Fortunately, the choice of free programs that allow us to achieve our goal without spending any money is off scale today.

IsMyLcdOK
IsMyLcdOK is a portable universal utility with a simple, intuitive interface that allows you to check a TFT liquid crystal monitor or an LED-backlit LCD monitor for dead pixels in a few minutes.

The program does not require installation, it runs on any portable devices and computers running Microsoft Windows: Servers 2000/2003/2005 Win 98/XP/Vista/7/8/8.1/10 x64/x86 from removable media. This will allow you to avoid unnecessary disputes with the store manager, who is not always interested in the test results.

The working menu is available immediately after the test run of the program. Switching between testing modes is carried out by selecting the numeric keys corresponding to the description.

Program window

The program allows you to evaluate the speed of image processing, the refresh rate of the screen and the stripes painted in different colors - rectangles. Tracking the alternating color and monochrome image and following the simplest instructions, you can accurately and easily detect dead pixels on reference colors, determine their type and number.

The available color gamut makes it easy to find dead pixels or make sure they are absent.

NOKIA MONITOR TEST 2.0
One of the most popular utilities in this category, which has advanced features for checking the quality of an LCD monitor, including a test for the dead pixel problem of interest to us, as well as templates that allow you to evaluate parameters such as resolution, moiré, contrast, focus, brightness, readability text, geometry accuracy, color reproduction and much more.

Program window

Using Nokia Monitor Test, you can test not only the image quality of monitors, but also the latest generation of video cards. The advantages of the program are the power of the functionality, the simplicity of the interface, the miniature size of the distribution kit, the ability to run from removable media. To obtain all the data necessary for analysis, you just need to move the left mouse button on the active buttons of the main screen menu.

System requirements: Servers 2000/2003/2005 Win 98/XP/Vista Windows7 Windows8 x64/x86. Installation is not required. Distribution size 1.15 Mb. The Russian version is present.

PixPerAn 1.011e
The developers of this program cannot be denied originality. Unlike more or less ascetic or, on the contrary, colorful static interfaces, here the key parameters of the monitor's performance are checked on a dynamically changing picture. The utility contains a series of unique tests to identify problems associated with LCD matrix inertia. Among them is such a common one as multi-colored trails that occur when viewing a dynamic picture.

Program window

PixPerAn tests allow you to adjust the color palette, size and speed of movement of objects, while monitoring the response of the matrix, drawing speed and the number of dropped frames, processor load and screen parameters. The "gaming" test will allow you to play a fun simple game with cars and identify image flaws in a rapidly changing dynamic.

The original game test that allows you to evaluate the quality of the image in dynamic scenes

Thus, by installing this miniature (68kb) utility, you get the opportunity to simulate on the display the conditions under which the hidden problems of the monitor will manifest themselves explicitly.
Platform: Windows. The interface is English.

All of these programs are absolutely free and do not require registration in the registry.
The patient is alive...

So, software diagnostics allowed us to accurately determine the presence, location and type of dead pixels. We will assume that we are lucky, and the pixels that we observe on our screen are among the "stuck", that is, light.
As paradoxical as it may seem, it is often possible to carry out an operation to “reset” a pixel into its place by massaging the injured area with circular movements. This should be done not with a finger and not with hard and sharp objects, but with a cotton-tipped stick, gently, slowly, with the monitor turned off. And in order not to "miss", mark the dead pixels detected by the program before the moment you turn off the monitor.

Manual therapy or how to get rid of frozen pixels surgically

Repeat rotational movements for two to three minutes, then start the monitor and appreciate the fruits of your labors. If there are none, repeat everything again. The method does not give a 100% guarantee, but it increases the chances of getting rid of the problem many times over.

The "civilized" way
Unlike the first method, which requires some caution on your part, the alternative - programmatic method is completely safe. The easiest way is to use a specialized program that will deal with stuck pixels in a few minutes. You can launch it directly from the site by following the link: www.jscreenfix.com/basic.php and clicking on the Launch ScreenFix button at the bottom of the page.

After starting the program, you will see a window with flickering pixels, which must be combined with the problem area. In the process of “shaking”, the colors of individual pixels change at an increased speed, which at some stage allows the hung culprit to “unstick” and return to working condition.

Jscreenfix at work

As practice shows, in 20 minutes of work the program deals with the vast majority of problem points. If the result is not achieved, the developers recommend leaving the computer in this mode for 5-10 hours. Note that the cured pixels do not acquire immunity and with the onset of the summer heat they have every chance of sticking again. In this case, the course of treatment is recommended to be repeated.

Well, now you are armed with knowledge, and if necessary, you can deal with dangling pixels without the help of computer gurus and intractable managers. Better yet, use the knowledge gained when buying by testing the monitor of one of the programs on the store counter, then the problems of “hanging” and fatal black pixels can be avoided!

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Through the monitor or laptop screen, the user consumes information, so the presence of defects on it is unacceptable. The monitor itself is a fairly simple device, but at the same time quite fragile. The main trouble that a user may encounter when buying a monitor is the presence of dead pixels, that is, elements of the screen that are not able to correctly translate colors. In order not to encounter such a problem, you need to carefully check it when buying a monitor, and in this article we will look at how to do this.

Table of contents:

What is a pixel, what are dead pixels

First you need to tell a little theory. A pixel is the smallest part of a display that displays a picture. Depending on the resolution of the display and its diagonal, a pixel can be larger or smaller in terms of physical dimensions.

Please note: Modern monitors can use several million pixels.

If one of the pixels or a group of pixels does not work, the image on this part of the screen will not match the one transmitted to the monitor from the system unit. There are several types of dead pixels:

Non-working. These pixels do not transmit a picture, and they are always black;
Stuck pixels. Most often, these are pixels that are stuck in blue, red or green. They are not capable of working with RGB colors;
Permanently glowing pixels. These are pixels that are constantly lit in white.

Please note: Sometimes not one pixel fails, but a group of pixels in a horizontal or vertical strip, or “squares” of pixels, for example, 5 by 5 or 10 by 10 elements, are damaged.

Why is it important to check the monitor for dead pixels when buying

When purchasing a new monitor or laptop, be sure to immediately check for dead pixels in the store. This is due to the fact that if you find a similar defect after purchase, then it is far from a fact that it will be possible to return the monitor under warranty. The fact is that there is the ISO13406-2 standard, which determines the permissible number of defective pixels for monitors of various classes.

This standard provides for the launch of monitors on the market in 4 quality classes. The best class is the first, the worst is the fourth.

Please note: Almost all mass monitors are produced in the second quality class, respectively, according to the standardISO13406-2 they imply the presence of dead pixels.

According to the standard ISO13406-2, the following number of non-working or incorrectly working pixels in monitors of various classes per one million pixels per panel is allowed:

1 quality class. There should be no defective pixels at all;
2 quality class. No more than 2 permanently burning white pixels, 2 permanently off black pixels, 5 pixels with other defects are allowed;
3 quality class. No more than 5 permanently burning white pixels, 15 permanently off black pixels, 50 pixels with other defects are allowed;
4 quality class. No more than 50 permanently lit white pixels, 150 permanently off black pixels, 500 pixels with other defects are allowed.

It should be noted that the acceptable value of defective pixels does not mean that they are necessarily present on a monitor of one class or another. The quality class of the monitor according to accepted standards is determined by the manufacturer of the device. Depending on which class he determines, additional warranty obligations are imposed on him.

How to check your monitor for dead pixels

When purchasing equipment in a store, there is always the opportunity to check it right on the spot, and in a situation with a monitor, this must be done. There are special applications that allow you to check the monitor for defective pixels. Programs are available, both standalone and presented on various sites.

The principle of operation of all programs for checking the screen for broken pixels is identical. The entire working area of the display is filled with a single color, a group of colors or a gradient, which allows you to see dead pixels, if any, on the monitor. Consider the main programs and sites that can be used for such a check.

Programs for checking the monitor for broken pixels

If you buy a monitor in a store, it is better to first write one of the programs described above to a USB flash drive in order to perform an on-site test.

Dead Pixel Tester

One of the most famous free applications for checking the monitor for dead pixels. To use the Dead Pixel Tester program, you must:

Among the features of the program, it should be noted the possibility of setting the function of changing modes on a timer, for this you need to check the box “Auto Color Cycle” and set the time in milliseconds. After that, the modes will change automatically.

Another feature of the program is the creation of a limited area on the screen with constantly changing colors. To create it, you must click on the "Exerciser" button, after which the corresponding square area will be created. It can be dragged with the left mouse button. If there is any doubt that there is a dead pixel in some part of the monitor, this tool helps to verify this.

IsMyLcdOk

IsMyLcdOk is another application that does a good job of diagnosing dead pixels on a monitor. The program also does not require installation, and it can be easily downloaded for free on the Internet. The application weighs very little and works very simply.

When the IsMyLcdOk program is launched for the first time, information will appear that describes what should be pressed to perform the check. To return to the instructions after starting the diagnostics, you will need to press F1.

To test, select the mode using the buttonsF2-F5. Among the monitor check modes available in the IsMyLcdOk program:

Check BitBlt MB/sec;
Colored rectangles;
Painted stripes;
Durability test;
vertical lines;
horizontal lines.

In addition to special modes, it is also possible to simply switch colors or gradients.

Sites to check the monitor for dead pixels

If you do not want to download a program to check the monitor on your computer, you can use sites with similar functionality. Let's consider a couple of options.

Please note: Sites for checking the screen for broken pixels are convenient to use, for example, when testing tablets or smartphones.

Monteon

A simple and functional service for testing a monitor for broken pixels.

To use the service you need:

To finish testing the monitor by the service, click on the house icon in the lower left corner of the screen.

Please note: ServiceMonteon, unlike the programs discussed above, has a mode in which a looped video is shown. In this mode, you can check the pixel color update rate.

Vanity Monitor Test

Quite old, but well-established, a service that allows you to test the monitor. For this service to work, you will need to have Adobe Flash Player on your computer, which can be considered a minus. To start testing, you must click "HTML Windows".

The choice of operating mode in the Vanity Monitor Test program is carried out through the drop-down menu at the top.

Treatment of dead pixels of the monitor

Dead pixels on the screen are not always a sentence. In some cases, you can get rid of them and make them function in standard mode again. There are several ways to do this:

If none of these methods helped to restore the broken pixel, you will have to put up with it, or replace the monitor.

Hello, friends! Today we will learn how to detect and "revive" dead pixels on the LCD screen.

If you find a dead pixel on the screen of your LCD monitor, this does not mean that it really "died" and cannot be restored. You can try to fix this defect yourself.

A pixel is the smallest image element in a raster graphic, or the physical element of a display matrix. The image you see on your monitor is made up of many dots called pixels.

In a modern monitor, each pixel is controlled by a thin-film transistor, and when it fails, an inactive dot is formed on the screen - a dead pixel. As you understand, this problem can only be solved by replacing the corresponding transistor. This procedure is carried out in specialized laboratories and is not available to the average user. However, there is another type of dead pixels - stuck ones.

How to detect dead pixels?

There are many different programs that cycle through different colors on the screen. The main feature will be any dot of a different color on a solid background. The pixel seems to get stuck in one position and does not respond to image changes. Such defects can be restored by some programs and physical manipulations.

How to repair a dead pixel?

Let's analyze the hardware (software) method with which you can identify and try to "revive" a dead pixel. Examples of such programs are Bad Crystal, JScreenFixDead and Dead Pixel Tester.

Dead Pixel Tester is a free utility that is designed to test and repair non-working pixels (dataproductservices.com).

To do this, use the Dead Pixel Tester utility and run it. In the "Pattern" column, select the "Solid" option, next to the "Auto color cycle" column, check the box and set the time: 2500 ms. Leave the program running for one to two hours.

The principle of operation of this application is to stimulate the allegedly "dead" pixels with alternating colors. It happens that as a result of such color activity, faulty pixels begin to function normally.

If this does not help, you can use the mechanical method. Take a cotton swab or microfiber cloth (some people prefer to use an eraser), and then, with a little pressure, swipe over the area of the screen with a defective pixel from left to right and from bottom to top.

Repeat this process several times. If this procedure also did not help, then the pixel is really corrupted. Now you know what a pixel is and how to fix such defects. See you in new articles. Good luck! I would be grateful if you share this article with your friends.

Summer has begun, the heat and new jokes. I have a one-room apartment and, think for yourself, I decided to put a second computer in the kitchen with a 19-inch TFT monitor! And where does the summer and dead pixels? And here's the thing. 36 degrees outside, stove, oven and high humidity did their dirty work - a couple of dead pixels appeared on the monitor.

Dead pixels are constantly glowing or vice versa - dots or parts of a dot (subpixels) that do not work on the monitor. If the pixel does not work at all, then it always looks black and is only noticeable on white and light colors. This is the most harmless type of dead pixels, but it is almost impossible to treat.

The most common dead subpixels are when a bright red, blue, green, yellow, turquoise or magenta dot is constantly lit. They are also called "stuck" pixels (stuck pixels). If such a pixel pops up in a prominent place, it is very annoying, especially red 🙂 If all three subpixels are buggy at once, then a white dot will glow on the screen.

By the way, defective pixels can both appear and disappear themselves. On my main monitor from the purchase itself, there were three multi-colored dots in the middle of the screen. When buying, I either did not notice them, or they appeared already at home, I don’t know. But I didn’t bother about this, because. they were absolutely invisible to the eye, if you do not peer. In 4 years of working with this monitor, I never noticed them, although they were in the middle of the screen.

I think this is due to the fact that my monitor is on an MVA matrix, and not on the common TN. Probably, the specificity of the matrix is such that minor defects are not noticeable. So, I recently decided to check if these pixels can be removed in a new way. I checked and they weren't there! We all went somewhere in formation 🙂

Programs for recovering dead pixels

It is not worth talking about high-tech methods used only in laboratories. Is it possible, in principle, to get rid of multi-colored dots at home? Yes it is possible! And I made sure of it myself. There are two ways to eliminate dead pixels - software and mechanical.

Restoration occurs due to the rapid change of colors of adjacent pixels. Thanks to this process, a large amount of energy is supplied to the sub-pixels and they come to life. This technology promises to recover from 55% to 90% of "stuck pixels". True, each case may require a different amount of time, you will have to experiment if you can’t remove the damaged pixels from the raid. Experiments mean changing the speed of changing colors and the running time of the program.

The repaired pixel may get stuck again after a while, especially in hot weather. Then the treatment process will need to be repeated. In some cases, such a pixel cannot be completely cured.

UndeadPixel will suit most

Go to the official website and download the program installer. I recommend the installation version, not the portable version.

In the main window of the program, it is proposed to start by finding dead pixels by filling the screen with solid colors: red, lime, blue, white, black and yellow. Different dead pixels will be visible on different backgrounds. If you already know where your pixels are, then we immediately proceed to recovery.

UDPixel works like this: a square appears in which colors change quickly, i.e. the pixel recovery algorithm works there, and we need to move this square to the problem area of the screen. In the "Undead pixel" section, you need to set the parameters:

Flash windows - the number of squares, i.e. how many problem areas are you going to treat at the same time
Flash size - the size of one square in pixels 1x1 or 5x5. Since it is very difficult to set a 1x1 square to exactly 1 pixel, a 5x5 area will do to restore even one pixel
Flash interval - pixel update rate by algorithm. The shorter the time, the faster the speed. Maximum speed at 3ms.

Press Start and move the flickering square(s) to the defective places, see the video below. When the pixel starts flashing, then this is already an application for victory, just leave it for a longer time. If everything is unchanged, then select the maximum speed and wait until the pixel disappears. In the worst cases, it can take 10 hours, there is no point in waiting any longer.

The peculiarity of UDPixel is that during the restoration of pixels, you can continue to work if the squares are not large and do not interfere.

JScreenFix for browser

This is not a program, but just a website, a free service on the Internet. Thanks to this, JScreenFix can be run on any device with the Internet: computer, laptop, tablet, MacBook or LCD panel.

Scroll down the page and click the "Launch JScreenFix" button. The JScreenFix script restores dead pixels in the same way as UDPixel, only without the ability to change the parameters, and it will not work at this time at the computer.

You need to move the iridescent square to the problem pixels, and if they are outside the browser window, then go to full screen mode using the green button. Watch the video to see how Undead Pixel and JScreenFix work:

The manufacturers of these programs recommend doing preventive maintenance to your monitor, occasionally starting the “recovery process”. I don’t know how justified it is to spend my attention on this, but for plasma panels this can be really useful.

Bad Crystal - all-in-one combine

On the site you can both download the program and buy it. The free version runs for 30 days in limited functionality mode, which does not work with more advanced technologies. On the Internet you can find a version without restrictions 😉

The program starts by selecting a device: computer screen, mobile phone, game console or plasma panel.

For mobile phones and game consoles, a video file is generated for the selected resolution. It will need to be played in repeat mode on a smartphone. For the TV, you can burn a DVD or flash drive with the finished video, or run it in Full Screen mode.

If you have a regular monitor or laptop, select "Computer Monitor". To display the additional menu, move the mouse to the top of the window. Four modes are available here: Common Clearing (CCM), System Modified (SMF), Complex Force (CFV), Personal Protection (PPM). The free version only works with CCM and PPM. The remaining two modes should provide a higher percentage of recovered pixels. CCM is selected by default.

Press "Launch" and move the window to the area of broken pixels. We wait 5-10 minutes and check. If the point remains, then increase the speed using the "Speed Up" button, which appears if you move the mouse to it, and wait another 10-15 minutes.

The developers claim that their algorithms allow not only to treat pixels, but also to eliminate spots on the screen and. But this is in the case when these are simply clusters of pixels that do not work correctly. Watch the video:

Further, so that the pixels do not get stuck again, it is recommended to turn on the automatic prevention mode - PPM. In this mode, the colors on the monitor change over time. The process starts 2-3 times a month when no one is working at the computer.

mechanical way

I have not tried this method, but I have seen many reviews in its favor. If the programs could not cope, then it's time to massage the monitor 🙂 Exactly. Take an ear stick and start doing massage on the site of a broken pixel. Just press not very hard, but so that stains appear, and massage the causal place. The case requires perseverance, as it may take from 10 to 30 minutes of work.

If it worked out - cheers! I congratulate you, you can “polish” this case with Bad Crystal. And if the pixel stubbornly does not want to recover, then you can try to run the program and simultaneously massage the place for about 15 minutes, and then leave the program to work for 10 hours.

I hope that the article was very useful to you. Your friends will be very grateful if you share this information using the social media buttons below the article.