Well, it is really necessary to check the machine carefully, but there is no need to be so nervous. My service in China is ok, because after-sales service is a big part of the competition.

Check it carefully when you buy it. The workmanship and details of the machine are similar, and the appearance can be seen clearly.

Then a very important, very important, very important thing is: check whether there are bright spots or bright lines on the display screen, that is, pay attention to whether there are red and green bright spots or bright lines when the screen is black when it is turned on. If there are, try to let him change to one without bright spots.

I just bought hp870 and didn't see the bright spot and a short bright line, so I changed it again. Fortunately, there is no bright spot in this house and the service is good. This is a computer problem. I changed it after reading it.

As for hardware testing, it seems unnecessary, because all new machines are packed in a sealed carton, which can only be opened after being taken, but testing is also acceptable.

Image point software station

Master of optimization, Z weapon

Can detect very detailed hardware information, such as specifications, manufacturers and so on.