You don’t have to be too sad about this. You probably bought an assembled hard drive, so this problem is usually not too big. You can use Master Lu to check the power-on time of the hard drive. As long as the disk inside is new, even if It's not a big problem with assembly. The safety and durability may not be as reliable as the original ones, but this is actually a psychological effect. Mine has been assembled for two years without any problems, so feel free to use it. Besides, the 500g model only costs 550 and the price is not expensive, so there is no need to worry about gains and losses.