How to fix the "c" key on a netbook?

Question

Keyboard

Turn on your netbook.
The password window is completely filled with the symbol "c".
When you click on the "c" button itself, nothing happens.
Nevertheless, sometimes during working hours it shoots itself and begins to fill the entire space with this symbol - in short, it sticks.
I opened the netbook - everything seems to be fine. I reconnected the cable on the keyboard, pulled the contacts - zero reaction. But now she shoots herself.
What do you advise to do?
It's not okay to print or copy.
I tried to reassign programmatically, nothing happened. Are there specific instructions for my case?

Answer 1

Rinse the keyboard in alcohol, in an ultrasonic bath. Or change.

Answer 2

change, the keyboard is dead.