I had a similar experience with Lenovo. I was unable to use my device for nearly six months, during which I went through about four returns. They kept sending my laptop back broken! They sent it with a range of issues - initially, they failed to fix the intermittent display flickering, afterwards, it came back with a keyboard containing dead keys, dead LED indicator lights, and missing screws. In the end, I called and told them they were going to pay me for the laptop and we'd part ways.

I will never buy Lenovo again.

I have amazing small/medium business support from Dell on my monitors. If I see a dead pixel, slight backlight fade, or any other issue, I can call Dell and have a new monitor sent overnight to my door.