How long does the laptop need to be maintained? Like a radiator!

Do you know what is the most expensive part of your laptop? Perhaps everyone knows the answer very well, that is your "face"-LCD screen. Compared with the CRT screen used in desktop computers, the LCD screen used in notebook computers has many advantages, such as "low power consumption, no radiation and no dizziness", which can protect users' eyesight to a great extent. LCD screen is expensive, generally accounting for 40% of the cost of the whole notebook computer. At the same time, its physical characteristics make it the most fragile and exquisite part of notebook computer, which also determines that it needs to pay a lot of extra attention compared with CRT. However, in daily work and life, we can often see some friends' incorrect habits of notebook LCD, which affect its display effect or shorten its service life. So, what precautions do we have for notebook LCD screen in daily use? Ok, please find the answer you need in this article.

Liquid crystals used in notebook computers can generally be divided into TN, STN, DSTN, H PA and TFT, among which TN and STN are rarely used in existing products. What we can see are basically models of DSTN, H P A and TFT, among which TFT is the most common. This paper mainly focuses on TFT (thin film transistor), which is a mature and widely used liquid crystal display at present, but it is also basically applicable to other kinds of liquid crystal displays.

First, not dismantling is the bottom line.

In the instructions of many notebook computers, a paragraph will be noted: "To avoid electric shock, please don't open the back cover by yourself. If you need service, please contact a professional or authorized person. " Like other electronic products, LCD will generate high voltage inside. The CFL alternating current in LCD background lighting components may still have a voltage as high as 1000V after being turned off for a long time, which is definitely a dangerous value for the human body with only 36V, and the possible harm to the human body can be imagined. Therefore, never try to disassemble or replace the LCD screen, which is not the "game" scope of DIY. Even if there is no harm to human body, it is inevitable that LCD will temporarily or permanently "lose its working ability". So, for the health of yourself and notebook LCD, please don't cross this bottom line!

Second, the choice of bags must not be sloppy.

Laptop computers need to be carried frequently, because outdoor weather may often encounter windy and rainy weather, and bumping is inevitable. At this time, it is particularly necessary to choose a well-made, thick and reliable notebook bag for your notebook. Some notebook bags are made of waterproof fabric, which can effectively prevent rain from eroding internal components such as notebook LCD. Thick bags can also minimize the damage caused by collision to the fragile LCD screen.

Don't think that everything will be fine with a good bag. Fortresses are often breached from the inside. Attention should also be paid to the placement of items in notebook bags. Don't put sharp things such as keys and screwdrivers in your bag. It is best to put the battery, power adapter, external light, floppy drive and other accessories in a special small bag to avoid squeezing the top cover of the notebook to damage the LCD screen, and at the same time try to avoid scratching and scratching the notebook shell.

Third, the top cover is not a "stage"

I don't know if you have this experience: sometimes you need to move your laptop, not only the machine, but also the power adapter and an external mouse. Two hands are not enough at this time. Some friends put these things on the top cover of their notebooks to save trouble (I have also seen a few heavy books piled on the top cover). It's easy to save trouble I don't know, the design and manufacturing strength of many laptop tops are not enough to ensure that its deformation will not affect the LCD in this case. You can try to squeeze the top cover of the notebook with your fingers a little, and most notebook screens will have water ripples on the corresponding parts. LCD has several layers, which are: vertical linear polarizer, glass sheet, transparent X electrode, calibration layer, liquid crystal flow, calibration layer, transparent Y electrode, glass sheet and horizontal linear encoder. These materials are very fragile and easily damaged, so once an external force acts on them, the stool will cause irreparable damage to the liquid crystal. In view of this, some notebooks have specially designed or strengthened the top cover.

Fourth, don't ignore the upper cover switch.

Seeing this, some friends may say: joke! I can't even switch the laptop screen? In fact, due to the pursuit of thinness, some notebooks have to sacrifice the strength of the top cover in design. The connecting shaft between the top cover and the fuselage of most notebooks is made of plastic. If the force is uneven or too large during switching, the connecting shaft will easily break or even fall off over time. The display and power supply line of the LCD screen is connected to the host through the channel in the connecting shaft, which is probably damaged at this time. Therefore, the correct opening and closing method should be: open and close at the center of the front edge of the top cover, and pay attention to the uniform force and try to be gentle.

Fifth, "pointing out the country" is unacceptable.

Some friends like to touch the LCD screen with their fingers when making a demonstration with a laptop, which will leave your fingerprints on the LCD screen and bring trouble to the future cleaning (the specific cleaning method will be explained in detail later); Your nails may cause irreparable scratches on the LCD; If the force is large, it may also cause damage to small lines and devices on the LCD. The most common situation is the so-called "bad point". Some friends are used to talking and laughing in front of the screen (such as voice chat), and this habit is unacceptable. Because human saliva is acidic, it corrodes LCD screen to a certain extent. In order to avoid this situation, some impatient friends use film to protect the screen, just like the new machine just opened, but it is not recommended to do so, because it will greatly affect the display effect of the screen.

Six, strong light irradiation is taboo.

Everyone may know that the phosphor of CRT tube will age under strong illumination, which will reduce the luminous efficiency. In fact, LCD will also accelerate aging due to strong light. In order to avoid this result, we should put the monitor in a place with weak sunlight or no light; Or in a room with strong light, hang dark curtains to reduce the light intensity.

Seven, should avoid humidity, temperature difference.

Moisture is the "natural enemy" of LCD. Don't let anything with moisture enter LCD. Besides avoiding drinking water near the computer, you should also be careful not to put the machine in a damp place, because severe humidity will damage the components inside the LCD. In winter and summer, the temperature difference when entering and leaving a room with heating or air conditioning will lead to "condensation phenomenon" When the user energizes the LCD at this time, the electrodes of the LCD will be corroded, causing permanent damage.

First of all, we should pay attention to avoiding this situation. Generally speaking, the temperature change should not be greater than 10℃/ 10 minutes at least. Once this happens, don't panic. If you find that there is only fog on the surface of the screen before starting the machine, just wipe it off with a soft cloth before starting the machine. If the moisture has entered the LCD, put the LCD in a warmer place (of course, it can't be baked on a fire), such as under a desk lamp, and gradually evaporate the moisture inside. If it is in the rainy season, even if the notebook is not used, everyone should turn on the power regularly, let the machine run for a period of time, heat the components and disperse the moisture. It is best to put a small bag of moisture-proof agent in the notebook bag.

Eight, pay attention to diet and drinking water.

Many friends like to use the computer while eating, which easily leads to food residues sticking to the LCD screen or falling into the gap of the keyboard. In particular, some juicy and greasy food splashed on the LCD screen to avoid stains; When using the notebook, please drink water or other drinks carefully. If the liquid enters the gap at the edge of the LCD screen when it is turned on, the consequences will be unimaginable. At the same time, for your health, please try to avoid this habit.

Nine, grasp the time and brightness.

The service life of laptop LCD screen is generally nominally 5 years. Lighting with backlight tube has a long service life. The service life here mainly refers to the brightness index. After reaching the nominal time, the brightness of the LCD screen is basically halved. This is also the reason why the screen of notebook computer will turn yellow when used for a long time. In addition, the graphic units of LCD are composed of many liquid crystals, that is, if a fixed content is displayed for a long time, some graphic units will overheat and cause damage. Once the injury happens, it will be permanent and irreversible, so we should pay enough attention to this problem. Of course, deliberately reducing the use time of notebooks is not a realistic and good way. After all, computers are for use. When we leave temporarily, we can set a shorter screen closing time in power management to reduce the loss of lamps (some machines can quickly turn off the screen backlight by shortcut keys, which is more convenient); In normal use, you can adjust the brightness level of the screen to a suitable level (the specific level depends on the light in your environment and personal habits) to delay the aging speed of the lamp; Generally speaking, don't leave the LCD on for a long time (more than 72 hours in a row); It should be noted that the display principles of LCD and CRT are different, so it is useless to use screen saver when there is no operation. At this time, the backlight is still on and still consuming.

Ten, a piece of cotton paper saves trouble.

You can notice that when the notebook is closed, there may be friction between the keyboard and the LCD screen, which will lead to the situation of screen display, especially the possibility and degree of squeezing (which is one of the reasons why you should not pile up debris on the top cover). Notebook computer users also have a very convenient solution, as long as you find a soft and smooth cotton paper (slightly larger than the notebook keyboard) on the keyboard, which can basically avoid worries. It should also be noted that if your laptop uses a pointing stick mouse, the protruding pointing stick cap is also a factor that causes the screen to be scratched when it is closed. Please take off the pointing stick cap when closing the notebook and store it separately.

Eleven, clean to pay attention to.

No matter how careful we are, the LCD screen will inevitably be contaminated with stains and dust, so we should clean it properly according to the situation. Let's take a look at how to wash your face properly:) The notebook LCD screen is very easy to absorb dust, and the handling of this situation is very simple. It can be brushed off gently with a dry soft brush (or blown off with an ear washing ball) without additional treatment. If your screen is covered with fingerprints, saliva and other unknown stains, you need further cleaning methods. Note: the operation should be closed when wiping; And there should not be too much detergent or anhydrous alcohol, so as to avoid the liquid flowing into the LCD through the gap between the screen and the screen frame and causing failure; The wiping direction should be consistent from beginning to end, and don't turn around; Wipe as gently as possible to avoid damaging the LCD screen with excessive force.

In the notebook computer, the password has a special password chip or is written in FlashROM. If you really forget the password, it is very likely that the machine will be scrapped, and major manufacturers have long stated that they do not guarantee to forget the password. If you really insist on repairing it, be prepared to pay for a new motherboard.

The BIOS password of notebook computers can be roughly divided into PowerOn password, SuperVisorPassword and hard disk password, and some models also have special setting passwords. '

For the power-on password, most models can remove it by unplugging the BIOS battery, but only if the super user password is not set! Otherwise, even if the boot password is removed, the super user password will still appear, and you cannot enter the BIOS without entering the correct password.

There is a place that many people easily overlook, that is, the power-on password and the super-user password cannot be set the same. Otherwise, after you cancel the super user password, the boot password will pop up, and you can't pass the original password! Compaq users should pay special attention to this.

Hard disk passwords have been paid little attention to. Its function is to prevent the data in the hard disk from being stolen after the laptop is stolen. For the hard disk with the hard disk password, the password of the super user takes effect at the same time, and the machine cannot read the hard disk without the super password; Even if the hard disk is removed to another machine, the hard disk password still exists and the hard disk is still unreadable.

Hard disk password seems to be a cool and safe function, but please don't forget that once your motherboard is damaged or your machine can't start for any reason, the contents in your hard disk will die with the motherboard. As long as the hard disk is identified as not on the motherboard with a password, your data can't be read, so I don't recommend that you encrypt the hard disk with this hardware-level method and encrypt the folder with software.

Some users, after entering their passwords and confirming them, find that their passwords seem to be wrong. No matter what they enter, they can't open the password that is clearly set correctly. 80% of them are because the numeric keypad or capital symbols are turned on when entering and confirming the password. Because the notebook computer does not have a separate numeric keypad, a hotkey (usually FN+NumLock) is designed to convert some letter keys into numeric keypads. If you accidentally open the keyboard when entering a password, the letters you enter actually contain numbers. After restarting, the numeric keypad will be automatically cancelled, and you can enter the password according to what you think is correct. Also, some models, such as IBM, have a maximum password length of 7 digits instead of 8 digits, so when you enter 8 digits (8 digits are allowed), you will make a mistake, so you'd better remember your password. Once lost, it's really troublesome.

"Eight Notices" of Notebook Computers

In addition to the most easily thought of, the most special anti-pollution, in fact, in the maintenance process of white notebook computers, we should pay attention to the commonness of many notebook computers, which we have also briefly introduced here.

First, pay attention to the protection of LCD. Do not remove the protective film of LCD to avoid dust and fingerprints; Do not use sharp objects, such as original ballpoint pens, to directly touch the LCD, which may scratch the LCD; The notebook can't bear the overweight items placed on it, which may cause the LCD to crack. Pay attention to the maximum bearing capacity of the logo in the product packaging bag; Industrial alcohol or glass cleaner can be used. First, dip some on the soft cotton cloth and gently wipe the LCD screen with a straight line, but be careful not to use too much detergent to avoid flowing into the gap of the LCD, causing short circuit and corrosion of the LCD circuit.

Second, pay attention to battery maintenance. Heat is one of the killers affecting chemical activity. Long-term plugging and unplugging will not only lead to high battery temperature, but also affect the chemical activity of the battery itself at a relatively high temperature. After a long time, the chemical energy of the battery will gradually decrease, and finally the power supply time of the battery will be reduced. Therefore, customers who use external power supply for a long time should take it out after the battery is fully charged, so as to ensure that the chemical activity of the battery is in the best state! If the battery is not used for a long time, it should be used at least once a month to charge and discharge it. When you get a laptop for the first time, you should have enough batteries for eight hours to keep the batteries in the best condition.

Third, pay attention to the maintenance of the keyboard. Keyboard is the most frequently contacted part of notebook computer users. As time goes on, some dust will accumulate between the keyboards. For these dust, you can clean the gap with a clean paint brush, or blow the dust out with a high-pressure sprayer that cleans the camera lens. As for the top of the keyboard, you can spray a stable cleaner on the soft cloth first, and then gently transport it above the keyboard, which can not only easily remove the oil stains on the keyboard, but also increase the friction between the keyboard and fingers, making typing more convenient. But be careful not to splash water on the keyboard, which may lead to serious damage to the internal printed circuit and personal danger. If you accidentally enter the water, you should immediately cut off the power supply, take out the battery, and then find a professional to deal with it. Don't dismantle it yourself, it may expand the damage.

Fourth, pay attention to the use of hard disks. Generally speaking, the most vulnerable time of hard disk is when it is turned on and off. As soon as it is turned on, the hard disk is activated, and the number of revolutions of the motor has not stabilized. If it vibrates at this time, it is easy to damage the disk and cause bad tracks. When closed, ordinary users often move at will because the hard disk is not completely static, which is also easy to cause hard disk damage. In addition, the notebook computer should be used in a stable state as far as possible to avoid operating the computer in places where trains, cars and so on will shake, which can prolong the life of the hard disk!

Fifth, pay attention to protect the optical drive and floppy drive. When using the optical drive, you should try to avoid smoking near the computer. Nicotine in cigarettes will gather on the CD laser head, resulting in poor reading. Do not use inferior discs or discs with irregular shapes, otherwise the laser head may be seriously damaged; Usually, you can use a CD cleaning sheet to clean the CD reading head. The same is true for floppy drives. Try not to look at some floppy disks that have been left for too long and may have been slightly moldy. Usually, you can buy a cleaning sheet of more than ten dollars in a computer consumables store for maintenance, which can prolong the life of the read-write head.

Sixth, pay attention to the concern of fans. Regularly check whether there is dust accumulation in the fan, which will lead to poor heat dissipation and then affect the stability of the computer. If there is dust, you can put a small brush into the fan and brush it off gently. Asus laptop will automatically detect the fan of your computer when it is turned on. If the fan does not respond when it is turned on, it is recommended that you contact the service station to avoid overheating and damage to the machine.

Seventh, pay attention to the use of the touchpad. Keep your hands clean when using the touchpad to prevent the mouse pointer from moving around. If there is dirt on the surface, gently wipe it with a soft cloth dipped in water. Touch panel adopts electrostatic induction principle. Don't write on it with sharp objects, and don't use it under heavy pressure to avoid damage and deformation.

Eighth, other precautions. Gently open and close the LCD cover to prevent the LCD cable from loosening due to excessive force, causing the screen to flicker; If the screen of your laptop is designed on the left and right sides, both sides should use the same force when opening it to avoid the lock from breaking due to uneven force; Avoid placing laptops at will to prevent LCD from cracking due to wrong sitting; When you put your laptop into your wallet, remember to fasten the internal buckle to avoid accidental opening and damage; Laptop bags are generally designed for carrying loads, and it is no problem to tie them behind, but putting too many sundries may overload and break the back belt; Don't expose the laptop to the overheated trunk for a long time, which will lead to premature aging of the laptop parts; Drivers should be updated regularly to ensure the compatibility and stability of notebook computers, and important materials in notebooks should be backed up regularly to reduce the risk of data loss; Unless otherwise specified, all peripheral interfaces of notebook computers cannot be connected with peripherals when they are turned on; Notebook computers belong to high-frequency electronic equipment, so external interference such as mobile phones should be avoided. Don't put them on the running laptop, or the laptop may crash or shut down automatically when you make a phone call.