x17 R1, bad product, quality, technology

This terrible product. I'm going crazy. I bought this computer for the first time, it was delayed by a month. when I got it, I used it for two months, there was a problem. I contacted the technical department for my computer and I put it send in for repair. When I got my repaired machine back for the second time, it often crashed and had a black screen during use. I need to hold down the power button to turn it off. I want to request a return! But no one cares about this problem of mine! I don't want to continue repairs, I need your claim! There is one more outrageous thing! When I turn on the computer and do nothing, you see 100gb of free memory on the hard drive. When I try to restart it shows 80gb of memory currently available. I try to open the game and run it for a while. Continue to check after exiting the game and find that the current available memory is 0! ! I was immediately angry, this is simply garbage! I bought a computer and headset last year, and this year I bought two x17 series computers and the latest headset mouse, and got this treatment! You have to give me an explanation!