check the laptop fixed screw, general business acquisition of old notebooks will have some problems, and businesses to be renovated and laptop notebook must be demolished, on some screws it will inevitably be left more obvious scratches, so if such marks are found on board the screw, the notebook computer must have a problem.
check the battery, most new laptops battery charge should not exceed 3 times, battery power should not be higher than 3%. If the battery level is too high or too much discharge, this laptop has been used for a long time, can be suspected to be refurbished. To note is that merchants may use the notebook have been tried by others as an excuse, but generally when commissioning business displayed will not use the battery to power a laptop, but with an external power supply directly, so this excuse for manifestly inadequate.
Everest is the most world's most prestigious testing software, through this software, we can easily understand that the overall configuration of a laptop, of course, you can easily identify the authenticity of the hardware identified Maoni in configuration form. While the need for the installation of the software, but Everest after installation folder can be copied to the USB drive, is preparing for a test run directly on the books.
does not learning will regret notebook inspection machine most full Raiders
in very rich "China characteristics" of notebook sale in the, inspection machine is pieces let rookie were a listen to on scalp pins and needles of thing, read people numerous of JS were in finds you is a only to slaughter fertilizer sheep zhihou not only will in money Shang ruthless knock a pen, also will in machine above Xia hand, shoddy, so "early brother" were buy books General will called high hand peer. But if mistake met the master, master is not responsible for, or even master JS arrangements "continue road", the hapless or are you, so ask for help than finding oneself, practicing their clairvoyant is the hard truth. In fact each player is by rookie grew up, today we'll introduce to you the purchase of laptop full inspection process more to horrific proportions, after this article was great minds converge, portable machine inspection person you can be.
check the notebook's serial number, by checking the serial number of the notebook, we can understand the specific situation of the notebook. General notebook serial number at the bottom of the label, we have to carefully check whether it has been altered, are traces that have been posted. When powered on into the laptop's motherboard BIOS Setup, the check in the BIOS serial number and serial number are the same and the body and the serial number check box, if these numbers are not the same, there is evidence that the notebook may be refurbished machines. Addition we can also use the search to the notebook serial number in the notebook on the Web site of specific delivery times.
especially pay attention to the bottom of the box, because the positive opening the hard to find, so display when using Prototype JS split, are generally open from the bottom to produce machines, from the bottom back after repackaging. Most laptop manufacturers as long as power is seen as inventory, display machine itself may use several times, also may have lost some warranty date, not all the notebook manufacturers are the invoices to determine warranty, but the bar date to confirm. If you encounter a suspicious package, be sure to firmly let businesses replace.
running the software, click on the computer-summary, we can see that the overall configuration of the notebook. Need to be checked individually with the followingSee section. Click on the Board-the central processing unit (CPU), you can understand the various circumstances of the processor, including frequency, supported instructions sets. Also note the memory, click the SPD, we can see the memory details of detection of a notebook. Click on the chipset, chipset information, we can see the portable, for a laptop with Intel integrated chipsets, suggest that you look at the project, because Intel chipsets have several such as GM/GMS/GML, their performance is different. For books, using a video card, its discrete graphics are losing, it is something we should pay attention to. Click on the display device-the graphics processor, here you can see the laptop video card information. Click on the monitor, we can also see the LCD screen manufacturer, date and other information. However, this information is for reference only, because there are many books of displayed information is not accurate, or even completely unable to detect.
to ThinkPad renovation machine for cases, first we to note original renovation of notebook of bottom will has a callout has "this products was again renovation and contains has using had of parts" of English label, this is recognition original repair notebook of a is important of flag, course cunning of JS certainly will will this label tore off, but this label even tore off Hou, also will in notebook Shang left corresponding of traces, so if inspection machine Shi found its bottom has similar of traces, is full has reasons refused accept this Taiwan notebook, because new of notebook computer Shang is impossible will left this traces of. Another important symbol is the manual, in repair on the specification of the laptop, has a similar marking, and in the notebook has a similar mark on the box label, so when we select a notebook don't forget to check the place, if you find such labels prove that the notebook to repair machines.
an article on: advantages of USB interface next: when purchasing a laptop, how to distinguish between material
hold court trial out of the box-a sample machine pop open check the LCT screen surface, observing whether the above signs of wear and tear is small, because LCT surface is very thin, not Polish, of above wear is generally difficult to clear.
end host-triage-refurbished
first of all, the most fundamental, is to determine what you get is not a new factory opened any sealed laptop Dell Inspiron E1705 Battery, is determined to buy a new machine, can be avoided to a large extent, and so even if you see the new machine and then excited, do not busy open. First checks the box, one at the top the original fragile stickers, check the paper is not damaged, heavy stick. And then checks the box at the bottom, have seals, if not, check the traces left by the sealing tape has been ripped apart.
and similar to Everest, CPU-Z is the same test machine configuration of software, but its processor, memory and chipset specializes in three blocks, and pure green software is compact, so very easy to use.
BatteryMon or you can copy files that have been installed to a USB drive, test run when no different from the method to use, and a green software. As a classic of battery testing software, is our inspection when required.
after unpacking, you will see product packing slip, a list should contain the parts of the notebook sale, then under the packing list inventory all parts to prevent omissions. To note is that General accessories has a separate box, accessories also have fragile stickers the same box, also note whether the accessory package is new has not been opened. In parts there is a very important warranty service card, to pay attention to check production number above and on the outer box and host number are the same at the bottom of.
first take a look at the factory refurbished laptops, this refurbished machine we call the original refurbished machines. Factory refurbished machines in the market today is more common in both the ThinkPad line of product, there are two or three line brand. Because of these laptops are by the manufacturer after the renovation into the market, product quality and appearance are very close to the new laptop, ordinary consumers can also rest assured that use. But this General major parts of the original repair machines will not extend the warranty period, prices zxcsky32645 should also be cheaper than brand new laptop a lot, so the JS factory refurbished machines as the new machine will be very happy to be sold to you. Manufacturers in the refurbished notebook, in order to prevent new and refurbished notebook notebooks confused disrupting the market, will leave a mark in a notebook, just give our attention to the following places, you can easily identify their true understanding of identity.
original factory refurbished notebook relatively good, harm to consumers should be relatively rare, the most dangerous are those from underground workshop of refurbished laptops, this type of quality there is no guarantee of a laptop. TheseUnderground workshop of course not refurbished mark left in a notebook, so the above mentioned methods for this class of notebook has absolutely no effect, you need also a check method.
for laptops, LCD screen display, undoubtedly of vital, like a bad point, of course, is also exempt from. DisplayX capable of conducting all all of these tests is a screen-test software.
hard drive test software: HD Tune
the battery test software: BatteryMon
wait on-the-machine inspection prerequisite software
check the accessories, it is necessary to check all Notebook Accessories, these annexes mainly included driver CD Dell Inspiron 9400 Battery, manual, warranty card, and so on, because when businesses sell refurbished laptops, it is difficult to collect complete these attachments, especially product specifications, are generally printed in its own, it is easy to identify. If the attachment is not complete, the notebook may also be renovated. (Present certain models of IBM laptop seems really not included driver CD, only a recovery CD, which is a special thing, but warranty and instruction is complete, please differentiate.
main interface where we can test laptop battery life, but due to time constraints, we usually do not test for the project. Click the Battery Information button above. BatteryMon Battery Information in the pop-up, we can view the battery information, including the total designed capacity of the battery (Design capacity), after the actual full capacity (Full charge capacity), current capacity (Current capacity), information such as manufacturer of the battery.
in some people seems, hard drive no necessary do too more of detection, but for HD Tune this software,, also has a very has characteristics of function, that is detection hard drive of information, which including has hard drive of power time, by this index we can understanding to this paragraph notebook zhiqian is has was using had, to this proved the machine is show prototype or renovation machine, thus this software also is is has run of necessary.
click on Health, below is the hard drive the power-on time. However please note that different manufacturers of hard disk units of measurement are different, of the more common are in hours, the unit of measure, but also a few manufacturers of hard drive is measured in minutes, and seconds. Click on the Error Scan, detect hard disk bad track and so is the case here, click on the Scan on it, but need to take a very long time, recommended checking Quick Scan, while this rapid detection tests are simple and fully sufficient.
check the smell of the notebook surface, just opened notebooks get a taste of industrial cleaning liquid, this flavor is not too pleasant to smell. Refurbished Notebook by hand, due to the use of commercial cleaning, notebook above will have a hint of flavor, and the surface of the notebook feels some clear;
unit testing software: Everest, CPU-Z
summary
users interested in performance of a hard disk, you can also click Benchmark, inspect the performance of the hard disk. Less than a minute later, scores of software will show the hard disk, you can get a maximum data transfer rate, response time, burst transfer rate, processor resource share test data.
refurbished machines the water is very deep, shendao can even drown prawn, but there is still law. There are two renovates machine on the market today, one is by the notebook manufacturer refurbished, another is from some underground factory turning on their own line, we will explain the different types.
first checks the surface of the notebook. Laptops now in many places such as near the keyboard are frosted, where surface because of regular contact with the body, long time will make it smooth and shining, is generally difficult to refurbished, as an important basis for our judgment.
run main interface is very simple, click the mouse or enter, detection begins. For laptop screens, to test projects included the following item: contrast test, we can adjust the brightness control, in order to achieve the best display effect. Course, black of more black, white of more white, each color block color difference more obvious, effect on more good; gray test, assorted with color transition more obvious, monitor of gray restore ability on more strong; 256 level gray test, and comparison of test similar, if to will all of color block are has difference of display out, that is very cattle of monitor has. Of course, also need to ensure the purity of black line;; the solid test, inspection highlights and bad points of the weapon Hp Pavilion Dv2000 Adapter, the softwareTurn display black, and red, and green dell vostro 1000 battery, and blue, and purple, and yellow, and cyan and white of pure color screen, we can is simple of judgment screen is has various bad points; staggered test, software will turn display vertical section, and cross section and staggered of lattice, test LCD screen for staggered situation Xia of display effect, for new of notebook computer,, usually the test also does not has problem; color test, color more gorgeous, and permeability on more good.
if the above test master, that computer primary JS in town had nothing poses a threat to you, but living in solitude in town, there are many skills advanced JS Babel, refurbished machines can be completely disguised as brand new unopened form, this will require further testing on the laptop itself.