Check the exterior carefully to see if it has been disassembled or bumped, and if there are any cracks, if you find this type of problem, don't buy it, no matter how cheap it is. However, if there are only some minor scratches, it can be considered, this is because due to mobility needs, some small friction is inevitable. And buy used laptops to look at its thickness, size, weight, and similar used laptops to compare, who to take who, according to their actual needs.
Step 2: Look closely and check your LCD display
This is very important. As we all know, the LCD display is the most expensive part of the laptop accessories, accounting for 20% to 35% of the cost of the entire machine, so you should pay special attention to when you buy: 1, the screen has no traces of damage, because there are traces of the machine for long periods of time, the refraction of the light will be serious damage to the human eyesight, accidentally move back to a machine that affects the eyesight is not worth it. 2, carefully observe the size of the display and display effect, the display effect and size of the display and price linked to consider, of course, can also be used to pressure the price. 3, detailed identification of the color of the display. Observe the color in addition to observing the screen is sixteen-color, 256-color or sixteen-bit true color as well as 24-bit true color, but also in its up and down, left and right diagonally across the observation, if no matter in which aspect can be accurately seen in the screen color, in order to conclude that it is true color. Otherwise, if you can only observe in front of it to identify the color, then it is pseudo-color. Can hold a high-priced high-quality LCD monitor at the merchant, and it will be placed next to the notebook you want to buy, in the same interface to compare their brightness, contrast and response speed, visibility and other parameters of the advantages and disadvantages. 4, pay attention to the delay performance and brightness of the monitor. When selecting an LCD monitor, the main thing should actually be its delay length, if the delay time is too long, the eyes will feel tired. At the same time the brightness is a weak point of the LCD display, the popularity of the brightness of the LCD is generally in the 200cd / ㎡ (lumens), below this brightness of the monitor is not desirable. There is also in the brightness of the time do not look at a single, with the contrast adjustment to see. Some LCD monitor brightness no matter how to adjust the same, the results of a high contrast look very harsh, extremely uncomfortable. In short, the eyes look comfortable and beautiful prevail. 5, pay attention to the bad points of the LCD screen. The most common is the white point and black point, we use the following simple method to identify when you buy: the general black point of identification is the entire screen background into a white screen, the black point is generally not escape your eyes; white point is just the opposite, the background of the screen will be adjusted to black, and this time the white point will also show its original form! However, in addition to white and black dots, sometimes there are other colored dots," which consumers can establish a red, yellow and blue screen background to simply identify.
The third step: carefully identify and test the components of the notebook
Check carefully the laptop's CPU, hard disk, memory and other components, the purchase of the best machine can be disassembled to see for themselves. In addition, we must be wary of the second-hand notebook of the traitorous use of desktop CPU to replace the laptop CPU despicable practices. Because the same frequency of the same CPU general users will not notice, but the use of desktop CPU and laptop CPU is very different, due to different heat issues, making the CPU issued by the heat in the laptop can not be dissipated, resulting in system instability. So try to ask for an on-site inspection of the CPU during the purchase process. For the hard disk, due to the inability to understand the advantages and disadvantages of hard disk through visual observation, only through the software method to detect, detection software available DM, NORTON, etc., through the DM, NORTON scanning, DM takes longer, NORTON shorter time. The scanning process must be smooth and even speed, if which cluster area is too long, that the cluster area must have a problem. About memory, used notebook memory from 32M to 256M are available, to try to choose memory greater than 64M, preferably more than 128M. Memory in the purchase of the full, because some laptop memory is more special, now long discontinued, can not be another match. In addition to the other peripherals such as graphics card sound card, should also be viewed clearly in person.
Step 4: Check the interface of the used laptop
Because it is essential to have a full range of interfaces. In today's laptop, with the popularity and application of external storage devices, USB interface has become a desktop or laptop necessary device, USB port is very important to an interface. So it is best to buy a used laptop with a USB port. In addition, infrared transmission and reception is now an essential feature of the notebook. And when buying a used laptop, an important purchase condition is to look at its internal power supply. An external power supply is a must, and you can't do without a battery, so the main thing to look at is the power supply is also the battery, that is, how long the battery lasts. For second-hand goods, nickel-metal hydride batteries can generally be used for one hour within one to two years, lithium-ion batteries can be used for two hours, which is the most basic requirement, otherwise do not consider.
Step 5: Check the status of peripherals
See if the keyboard, mouse, CD-ROM drive, floppy drive, modem, etc. are available and working well. The last time I saw a used laptop in the second-hand market, the keyboard was shiny and worn out very badly, in which case you don't have to buy it, and you'll have to pay hundreds of dollars for a new keyboard. At the same time, open a word processing software, try to see if every key on the keyboard is available, and if the mouse is flexible. Whether the built-in floppy drive, CD-ROM drive, modem, etc. are available, please try them one by one, as long as the equipment inside the computer can not be missed!
Step 6: Try to get after-sales service from second-hand merchants
This should also be the last step. Remember to retrieve all the accessories of this book (battery, power cord, etc.), the graphics card sound card communication card drivers should also be, but most of the sellers said no, the driver if there is really no does not matter, you can go to the laptop manufacturer's Web site, to download a full set of device drivers for this model of computer. Finally, a particularly important matter, second-hand laptop computers generally have two or three months of warranty (repair) period, be sure to dealers to warranty (repair) period written in the invoice, and during this period of your second-hand laptop many times for the test, and strive to find all the hidden problems, otherwise after the warranty period, you want to repair this type of computer, especially hardware failures can be troublesome, and must take into account the future! Repair whether it is convenient, if you can not buy parts, the machine is in the cheap can not be, because due to the small space inside the laptop, parts shortages, compatibility problems and other reasons laptop upgrade possibilities are almost zero.
In the current laptop market, used laptops also accounted for a considerable part of the proportion. After all, used ones are much cheaper, and if the configuration of the machine
is not very demanding, then between 5000 - 7000 yuan PII level laptop will certainly be very suitable for you. In the purchase of second-hand laptop,
Best to find some larger specialized in the second-hand laptop business business merchants, rather than go to find some small-scale operation of the store, some buy regular laptop
Store will also be engaged in some second-hand laptop trading, they provide the second-hand laptop is usually very good color, and also will provide a certain amount of warranty services,
In the configuration is also higher, only the price may be a little more expensive, through them to buy used laptops is also a good choice.
Because the quality of used notebooks varies, the price is often opaque, so the bargaining room is also very large, this time, it may be worthwhile to run a few more,
First understand the approximate price, and then in the purchase of the machine according to the quality of the machine and the color of the price cuts, the second-hand laptop profit is very large,
In the cut price of the heart may be a little more ruthless, as far as to be able to cut the price of the machine, the price is very high, the price is very high. The first thing you need to do is to get a good deal on a used laptop. Used laptops in the warranty service is usually
very limited, some even no, in the inspection, in addition to pay attention to the above mentioned points, but also pay attention to the driver and the machine settings of the problem,
Now we often see most of the second-hand laptops are smuggled from foreign countries, that is to say, and **** about the same, and in the driver and
machine settings may be more or less the same,
This is the first time in the history of the world to see the second-hand laptops in the world.
Machine settings may be incompatible with the Chinese operating system environment we use, so pay special attention to this point,
Also buy a used laptop to spend more time and effort to choose, be sure to be careful in every way, be careful, do not wait to buy home only regret.
Where to buy used laptops?
Currently, the places that sell used laptops are mainly centered on some used laptop markets, or online shopping malls. Here is a brief description of the difference between these two outlets, and what you should pay attention to when buying a used laptop.
●Online purchase of used laptops, convenient and fast!
Nowadays, buying products online is not a rare thing, as early as three to five years ago, online consumption has become fashionable. Easy and fast way to buy, so many young people for the "crazy", and today, more and more online shopping malls one after another, TV, radio, magazines everywhere their ads, with the sky to describe it is not too much.
Today's online shopping malls, compared with the past, the variety of goods has increased a lot, from the needle and thread, daily necessities, to the car airplane (Note: toy airplanes) are sold, without leaving the house, you can buy one of their favorite goods. Of course, in addition to a wide range of goods, the online shopping mall is also a "second-hand trading" plate, in which we can put their own want to sell the goods online, mark their heart price, for sale.
The "second-hand trading" section is often the "Taobao" mecca for everyone, and it's like an online "yard sale". In these second-hand products, of course, there is no lack of some second-hand laptop computers. These second-hand notebook is mainly to IBM, Toshiba, SONY, HP and some other internationally renowned brands of products, of course, there is no lack of some of them in the classic machine, although a few years ago, but because the product itself is well-made, so the product now does not look very old, and then again, now also popular retro well. The old look, but also full of cool.
Good things although more, but consumers in the online selection of products, a little attention to the following points to buy matters, in order to help you more good, rest assured that you buy the goods they want.
1. Try to choose the same city transaction or cash on delivery to buy, do not easily remit the payment to the field or other people's bank account to go, one hand to pay one hand delivery is always right.
2. After getting the goods must be carefully examined, in addition to the hard disk, keyboard and other routine checks, but also pay special attention to how long the laptop's battery can be used to see if the battery has been opened. A durable battery is very important for a laptop, otherwise it becomes a mobile PC.
3. Whether the seller is a unit or an individual, it is important to agree on a good warranty with them, and don't forget to ask for an invoice if it is a licensed product. It is best to negotiate with the seller for a certain period of time for the replacement period.
If you want to buy a used laptop online, then it is recommended to go to some of the large online shopping malls, such as eBay, Taobao and so on.
Now there are a number of shopping centers, specifically for online transactions launched a corresponding protective measures, such as Taobao "Alipay" service, it is Alipay company for online transactions launched a special security payment service, the essence of its operation is to Alipay company as a credit intermediary, in the buyer to confirm receipt of the goods before the temporary custody of the buyer and seller of the payment of goods. The service is a value-added service in which Alipay acts as a credit intermediary and temporarily holds the payment for the buyer and seller before the buyer confirms receipt of the goods.
●Used laptop stores
Now buy used laptop people, most of them still like to go to the store inside the turn, after all, only in the store, the consumer can see the real machine, hands-on experience of the product than in the online look at the picture of the real much more, but also be able to further understand the product. Especially the second-hand laptop, new and old degree, shell whether there are obvious scratches, broken, etc., their own eyes after seeing or rest assured some.
Currently in the Zhongguancun side, the more centralized second-hand laptop stores are Zhonghai, Guotou and so on. Here it is recommended to buy a second-hand notebook friends, try to go to this large-scale second-hand stores to buy, a more business here, the price is more transparent, the merchants are more centralized, cut the price is more convenient, this is not for sale to go elsewhere. In addition, this kind of operation for many years of the second-hand market has formed a scale, so in case of any problems with the goods, to find the merchants can not be resolved, if you can go directly to the management of the market to complain.
The most important thing to remember when buying a used laptop in the market is that you should never buy a used laptop from an unofficial source in an unofficial place. Often come to Zhongguancun friends know, on the side of the road or flyover, there are often some peddlers of second-hand goods, they will generally come to the side of the passers-by, to sell you some cheap second-hand goods. Some people who are greedy for cheap goods buy them when their hearts are soft, but when they return home, they will find that the goods they bought are basically fakes and defective goods. Moreover, most of these goods are imported through illegal means and there is no quality assurance at all. Consumers who buy this kind of thing are just like taking money down the drain.
At the same time, some unscrupulous vendors, will also be the second-hand laptop's internal parts of the private replacement, substituting good, to deceive consumers. Or through the software, the hardware configuration of the notebook to modify, a product to be out of date into the mainstream configuration of the new product, the average consumer may be deceived. So consumers should go to some of the more formal large-scale used laptop stores, to buy.
Notebooks have been favored by people for their compactness and portability. Although compared to the previous, the price of laptop computers has dropped a lot, but still relatively expensive, many friends with limited budgets have turned their attention to the second-hand laptop market. But because of the complexity of the origins of used laptops, new and old color varies, selling laptops businessmen and no lack of self-aggrandizement, so the selection of used laptops has become a big problem. Here I briefly introduce a few points to select the second-hand laptop notes, I hope to help you buy a machine.
Pay attention to the battery time problem
Battery is the source of life of the laptop, but also one of the fastest aging laptop accessories, most of the second-hand laptops on the market are used two to three years of products, and an ordinary lithium-ion battery in the use of two to three years will be more or less aging, and some of the duration of only 1 hour or more. The battery life is only 1 hour or so. Some merchants in the sale of used notebooks will replace the battery before the battery cell, the surface looks like the battery life is extended, but this is an undesirable behavior, because the internal structure of the laptop battery pack and the circuit is more complex, replace the battery cell of the battery pack failure is more likely, and very often in the use of a few days after the battery performance will be a sharp decline, or even damage to the laptop body, so it is not recommended to buy the replaced battery, the battery will be more or less aging. So it's not advisable to buy a laptop that has had its batteries replaced.
Of course, if you're buying a laptop for stationary use, and can link it to a power supply, the battery issue becomes less important, and a battery that can standby for more than an hour can be used as a UPS power supply.
Screen spindle can not be ignored
In addition to the tablet, almost every laptop to have the screen spindle, and the spindle is every time you use the laptop to wear mechanical parts, so the screen spindle wear and tear is also an important issue in the selection of second-hand laptop. If the spindle is too loose, the laptop will be very awkward to use.
The spindle can't be hidden, and consumers can see it directly, but those who sell laptops JS usually add a "loose can be adjusted to tighten" excuse to deceive consumers. Some laptop screen spindle loose indeed can be adjusted by adjusting the screws to adjust, but most of the laptop screen spindle is not adjustable, when the spindle in the middle of the damping material after wear, can only replace the entire spindle. Even for those laptops that can be adjusted, the damping material is already worn out, so it won't be long before it becomes loose again. Imagine what it would be like to have a laptop with a screen that suddenly collapses during use.
Screen bright spots, bad spots and dark spots
LCD bright spots and bad spots are still familiar to most consumers, but not everyone understands the dark spots on the screen. Dark spots are more hidden than bright spots and bad spots, and affect normal use more. Dark class is as small as a soybean, large may be as big as a thumb, and bright spots and dark spots are different, dark class is only a slightly darker local color, in light colors do not pay attention to observe out, change into a dark color background simply can not be detected. There are two main reasons for the formation of dark class, one is because of external forces caused by extrusion, such a dark spot area is very small, the middle of the color is deep, the outer layer is relatively normal some, in the thin and light notebooks on the more common. The other kind of dark spot is caused by the aging of the LCD screen, this kind of dark spot has a larger area, and it is possible to continue to deteriorate. Because the dark spot is only slightly darker than the surrounding color, it is easy to be hidden by the special design of the desktop. So try out a few more backgrounds when picking a laptop, or check with specialized testing software, such as Noika Ntest, which looks for bright spots, off-color, and other problems.
Also, the decline in LCD brightness is a common problem with second-hand laptops, which is generally unavoidable and acceptable if it's not very noticeable, but if you find that the LCD panel has become visibly yellow, it's best not to buy it.
Pay attention to peripherals and interfaces
Used laptop peripherals and interfaces is also a very high failure rate of the zone, the keyboard does not work or interface contact problems occur from time to time, these peripheral interfaces are very important, and many consumers in the inspection of the machine ignored these issues. In the many interfaces used in the most should be considered a USB interface, audio interface and network interface, especially the USB interface appears to be more important. USB interface is a common failure of the interface is no voltage, in this case, the mouse and USB flash drive and other devices without power can not be used normally, and with the power supply of the device, such as printers, scanners, etc. can be used normally. So I suggest, in checking the USB interface can bring a USB flash drive or mouse, etc. for testing, other interfaces, such as network cards, Modem, speakers, serial, parallel, PCMCIA, MIC interface and infrared interface is best to try.
The keyboard and mouse are the most important input devices in a computer, and the frequency of use is also the highest. Most notebook keyboards are designed with special 83 or 86 keys, and when you buy one, be sure to try each key to see if it is sensitive, if it is comfortable in your hand, if the keys are still flexible, and if the handwriting is clear. Keyboard malfunction is actually a very serious problem. Although not every key on the keyboard is commonly used, they are indispensable. When you find that one of the keys is not working, the vendor may tell you that it is an "insignificant" key and that you just need to replace it with a key. However, this is often not the case, as one key may cause the need to replace the entire keyboard, and replacing a laptop's keyboard usually costs a few hundred dollars, which is not worth it. In addition, because most people use a notebook with an external mouse, the notebook touchpad becomes dispensable, in fact, not, imagine you forget to carry a mouse day need to how to live.
Internal injuries are more important
Cautious of overclocking the CPU. processor is always the core equipment in the computer, so the purchase of a notebook must pay enough attention, it is best to choose a good brand of a second-hand laptop models after the Internet to check the standard configuration, pay attention to the frequency of the CPU, you can also use some of the occupation of the test software to test. the performance of CPU. Directly related to the performance of the entire machine, in order to make the second-hand laptop can also meet the use of a certain period of time, in the purchase of the recommended to try to choose the factory time near the high frequency of the machine, because the processor of the laptop computer are generally not upgradable.
Watch out for hard drives with bad sectors. The hard disk itself is a relatively fragile device, but also one of the laptop's vulnerable components, the existence of bad hard disk for the overall stability of the machine is quite unfavorable, if the hard disk is still abnormal rattling or in the process of using the speed plummeted, it is necessary to raise the vigilance of the. Many second-hand laptop hard disk used in the market are relatively old, generally 4200rpm, 512KB cache hard disk or even older models, the capacity of most of the 20G below. If you feel satisfied with all aspects of the machine except the hard disk, then you can consider replacing a new hard disk, after all, the laptop in the use of the process, the data saved in the hard disk appears to be very important.
The memory capacity should not be too small. The size of the memory capacity directly affects the performance of the machine to play, the current market used notebook memory capacity are between 32MB to 128MB, there are a few in the 32MB below, try to choose a capacity greater than 64MB, preferably more than 128MB, or perhaps upgraded to 256MB will be more appropriate. When purchasing, you need to pay attention to what kind of memory is used in the notebook, and whether there is a matching model for upgrading.
Warranty
The biggest drawback to a used laptop is its warranty. Although some used laptop businesses can provide some after-sales service, but this after-sales service is too small, and often very short time, usually only a short month. And basically most of the used laptops have no after-sales service, if the laptop malfunctioned, you can only bear the cost of repair yourself. But because it is a common situation, I can only recommend that you try to choose a larger scale, more machines, accessories complete point of the business to buy, this kind of business tends to be more reputable, maintenance is also more convenient.
Summary
While used laptops are relatively cheap and cost-effective, it is important to consider the motivation and purpose of your used laptop purchase. Some people are in order to play games, some people just deal with some documents, on the Internet and so on, in addition to some of the advertising design or video editing and so on the laptop requirements are relatively high, the ordinary configuration basically can meet the requirements. So in the purchase of time must be based on their own needs to choose, such as you want to type and so on, spend more than two thousand dollars to buy a second-hand laptop Ben2 is enough. In short, for the purchase of used notebooks, the need to rationally analyze their own needs, the courage to receive their shortcomings, dare to face the failure after the purchase.