I have a GalaxyBook 4 and when I switch on the laptop, it shows [System Information] with a QR code. There is only option to turn off and so I am unable to use. Factory reset also is not working. I did manage to open to windows by holding power+pressing escape, but then even if I open it, the keys misbehave and cause flickering. Also, the audio keeps switching on and off constantly.
Check the keys on the keyboard, and make sure the keys are not stuck. I fixed the same issue with my laptop about a year ago, and it was the "tab button" stuck (as if it were being pressed down). I cleaned the keys with rubbing alcohol and it booted. If you have no success, then I recommend having a professional look at it or taking it to a repair shop and having them evaluate it. https://www.samsung.com/us/support/service/locations/
The keys don't feel stuck though but I will definitely try it. Which liquid do I buy and try? Btw, did you also get the [system information] with QR code on boot?
One note with the rubbing alcohol. Don't soak the Q-tip so that it's dripping. You don't want liquid getting underneath the keys. Saturate it just enough to clean any debris.
