I bought a samsung galaxy book flex 2 alpha and loving it. Only complaint is that there's no setting to keep the backlit keyboard always on. I had to use a small vinyl dot to cover the sensor. I have glaucoma so having it on is a necessity.
I think your system must be missing some settings application of Samsung. So I suggest to thoroughly consult manufacturer official website you definitely find the solution because this problem is not related to windows and you also change these settings in the bios also...