Keyboard backlight doesn't work sometimes?

I bought a new notebook (Lenovo Campus Legion 5) for my studies. It was very expensive and is also very good so I'm actually satisfied. I've only had it since yesterday. Sometimes the keyboard backlight doesn't work when I press Fn + Spacebar. Then I have to restart it, then it works again. I can only turn on the keyboard lighting by setting it manually. Could it be because I have to update drivers? Is that a reason for a complaint?

Is that a reason for a complaint?

Of course, if it should be different.

The stupid thing with such devices is that it always comes down to the fact that you then have to flatten the computer and reinstall it. But that's not fun. That's why you buy something from Apple right away. Because at least the stuff works without such interference.