The easiest way is to see if there are signs of secondary packaging in the box first. Many places can reflect the problem, such as whether the seal is the original seal, but it is difficult to prove this problem without maintenance records in the maintenance center at present. Unlike a MAC, a PC can record the boot time, so it can only use software to find a "psychological balance" for itself.
You can try Mount Everest:
1. Check the system parameters to see if the registration date and time of the system is the first time for you to open it yourself. If there is a difference, it means that the machine has been touched by others before you turn it on.
2. In power management, compare the difference between the design capacity and the maximum capacity of the battery. If the difference is too big, it means there is something wrong with the battery (these two parameters in my notebook are exactly the same).
3. Finally, check whether the parameter "running time" in the operating system is consistent with your own use.
Finally, good luck ~ ~!