Shift keys laptop no longer work?

Me
2

On my laptop (Win 10) the shift keys (both) no longer work. I bought it second-hand, everything worked normally, and I didn't (knowingly) change it. Can only capitalize when I press the Caps Lock key. So I set up the laptop again and reinstalled the driver. I also connected an external USB keyboard on a trial basis, the shift keys work there.

br

Swap keyboard.

Gu

Simply buy a new keyboard or go to the settings of win 10 and then on devices then you would have to find something