Laptop key is not working anymore, what can I do?

bu
2

I restarted my laptop after a long period of inactivity (1.5 months), but I can't enter the password because the keyboard does not work anymore, all other keys seem to work. I tried to connect a USB keyboard, but did not work. I can't charge the laptop either, nothing happens. Can anybody help me further?

Gu

Take the button out and clean it.

Mi

In what way did not the connection of the USB keyboard work?