Lenovo yoga 920. Problem with drivers?

Question

Windows

Hello Lord!
The boss bought a Lenovo Yoga 920. Nothing, just the device, it just costs prohibitively.
After the purchase, about a month passed, as an unpleasant glitch got out: the screen brightness suddenly stops changing. At the same time, a change can be indicated by the "thermometer", but the brightness remains unchanged. Or, in general, the reaction to the brightness change keys disappears. At the same time, the power is connected to the laptop, but the brightness suddenly drops to about 70%.
Rebooting the laptop solves the problem. The brightness change starts working again and can work for several hours, then, suddenly, the brightness drops and ... Only a reboot saves.
The laptop has Windows 10 Pro installed. They have not yet managed to spoil it with dubious software.
Advise where to dig? The trouble is that for a long time I can’t pick up the laptop from the boss. So I would figure it out myself.
PS Vidyuha Intel 620.

Answer 1

Change adaptive brightness settings ?