1. When unpacking, check whether the seal is intact, not damaged and has been opened. If the seal is broken or opened, it is likely that it has been opened.
2. Check the appearance of the computer to see if there are scratches, stains or signs of damage. If so, it is likely to be a used machine. At the same time, it is also necessary to check whether the serial number of the computer is the same as the serial number on the box, and the inconsistency may be the machine that has been replaced with the serial number.
3. Check whether the power adapter of the computer is in good condition, and there are no signs of damage or use. If the power adapter shows signs of damage or use, it is most likely a used machine.
4. After booting up, do not activate the operating system first, and check whether the keyboard and mouse are consistent with the model of the operating system. If not, it's likely that the keyboard and mouse have been replaced. At the same time, it is also necessary to check whether the operating system is new and inactive, if it is already active, it is likely to be a used machine.
5. Run the hardware detection tool that comes with the system to check whether the hardware is consistent with the product specifications and whether there are traces of replacement or addition. If there is an anomaly, it is likely that it has been modified.
6. Check whether the computer is a brand new product by querying the serial number and production date of the computer. The serial number and production date can be checked on the brand's official website, and if it does not match the official data, it is likely to be a used machine.
In summary, determining whether a new computer is brand new requires careful inspection of aspects such as appearance, seals, serial number, power adapter, keyboard and mouse, and operating system. Only by confirming that there is no problem with all this information can you be sure that the computer you are buying is brand new. At the same time, it is recommended to choose formal channels and merchants when purchasing, and avoid buying refurbished machines or second-hand goods.