1. Check the serial number on the label

Carefully check the laptop serial number on the outside the box whether the serial number of the body of the machine in line. The serial number of the body are generally the base of the fuselage in notebook computers, in the check serial number, we must also check whether it had been altered and was re-posted off the scene. In addition, at boot time, first entered the notebook’s motherboard BIOS, the BIOS check the serial number and body serial numbers are the same. Three numbers are the same, the basic source of notebook computers no problem, if there is an inconsistency, is no doubt that parallel imports, or assembling goods. Formal channels to enter the domestic market, notebook computers, its official agents usually posted at the bottom there is a dedicated label indicating the product type. Such as IBM’s ThinkPad notebook computers and machinery at the bottom have a product model and serial number, its product model ending with the last one is a C, indicating China. Can enjoy a three-year International Warranty, so even out of the country do not have to worry about, if not, that is parallel imports. Therefore, after the selection of books sure to look for labels, right on the numbers, otherwise use the money to buy a licensed parallel big loss not only price, but also not entitled to many services. Once the love machine is a problem, it may disaster. It would also be able to check online or call look more insurance.

2. Overpack

First of all, check the packaging is complete and correct. After a general notebook computer open the packaging, there is also the power adapter, and related accessories, product manuals, certificates of UNPROFOR (number and laptop numbers the same), warranty cards, etc. Also documented, but also note that the operating system recovery disk, installation disk if consistent with the operating system on the machine. Take a look at this round after round of the hurdles to become very difficult to counterfeit, so when the purchase must face up to your eyes that, can still remember a close look at yo!

3. Check the appearance

Check whether the appearance of laptop touch, rub, is zoned, crack and other wounds, liquid crystal display (LCD) whether there are scratches, dead pixels, ripple, screw whether there Diaoqi and so on. Should try to look for in choosing a machine is not dead pixels, because there are dead pixels on the LCD may gradually spread. Appearance is also very critical, buy new things if there are scratches, it seems certain bad mood.

4. Check the battery

It should be noted that the new laptop battery should be no more than 3 times higher power should not be at 3%. And generally when the test machine dealer will not insert the battery, but directly connected to the power outlet. Charge-discharge capacity is too high or too many times to prove at least the machines were used. Sony, IBM battery management software can also be seen several times the battery has sufficient power of the. There is also some special detection software after we have repeatedly said that this must be on the spot inspection to prevent future trouble.

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