Keyboard has stopped working --- Solved!

Hello everybody.

Recently my Logitech keyboard has suddenly stopped working, and when I say stopped working, it means that there no response and no reaction from the computer when pressing a button.

After trying almost anything I could solve the problem, I'm writing this thread to help those who will cross with the problem.

1) Uninstall the driver from the device manager.
- Restart the computer.

2) Install the driver again.
- Restart the computer.

3) Enter to the "Logitech mouse and keyboard settings".

4) Get into the keyboard tab.

5) Get into the second tab in the left list (if the menu is in English).

6) Press the "Secure" button and then type what the program asks you to type, and follow the orders.

So, apparently the problem was a security problem.

I hope I could help you.