Keys stopped working?

Question

Keyboard

After cleaning the laptop, some buttons on the keyboard stopped working, after that I disassembled the laptop again to make sure everything was connected correctly, which is how it turned out. Then I collected it, turned it on, but nothing changed. What could be the problem?

Answer 1

If the keyboard itself was not disassembled, look towards the cable connection to the mother. He often has problems

Answer 2

Can you be more specific which buttons do not work and how? You may have enabled numlock.