Method One,
Check the laptop's fixed screws, the general business acquisition of the notebook computer will have some problems, and the business wants to carry on and renovate the notebook computer when must carry on the disassembly to the notebook, thus will leave the more obvious scratches on the screw, therefore if found on the screw above this trace, this notebook computer must have the question.
Method Two,
Check the smell on the surface of the notebook, just opened the notebook will have an industrial cleaning liquid flavor, this taste is not too good to smell, and manual renovation of the Notebook, due to the use of civilian detergent, notebook above will have a faint fragrance, and the surface of the notebook will touch some creamy;
Methods Three,
Check the surface of the notebook, now the notebook computer in many places, such as the keyboard near the abrasive treatment, these local surface because often contact with the human body, long time will make it smooth and shiny, this place is generally difficult to renovate, then you can see whether the keyboard will be smooth, smooth is problematic, So can be used as an important basis for our judgments oh;
Method Four:
Check the battery, the general new laptop battery charge should not be more than 3 times, the battery should not be higher than the electricity in 3%. If the battery is too high or charging too much, it means the laptop has been used for a long time and can be suspected to be a refurbished laptop. It should be noted that the business may be the notebook has been tried by others as an excuse, but under normal circumstances when the manufacturers do not use the battery to drive the laptop, but the direct use of external power, so this is also to pay attention to OH.
Methods Five,
It is necessary to check all the random accessories of notebook, these accessories mainly include drive CD-ROM, instruction manual, warranty card and so on, because when selling the refurbished notebook computer, it is difficult to collect these accessories, especially the product manual, which is printed by oneself, it is easy to identify. If these attachments are not complete, the notebooks may be refurbished. (currently some models of IBM notebooks do not seem to be included in the drive disc, only a recovery CD, but the warranty card and instructions are complete, this should be treated differently)
Method Six,
Check the serial number of the notebook, by checking the serial number of the notebook to understand the specific situation of the notebook, the general notebook's serial number is located at its bottom of the label, we have to carefully check whether it has been altered, the traces of the pasted, when the boot into the notebook computer motherboard BIOS settings, Check the BIOS serial number and fuselage serial number is consistent and check with the serial number on the box, if these numbers are not the same, then prove that the notebook may be refurbished machine. In addition, we can also use the serial number in the notebook's Web site to query the notebook's specific factory time, too long time to prove that there are problems.
Method VII.
Check the surface of the LED display, observe whether there is a small wear traces, because the LED surface is very thin, so can not be polished, the above wear is generally difficult to clear, if there are signs of wear should be noted.