Inspiron 1520 keyboard

Solution
Since you don't actually mention what is going wrong with the keyboard, you can try the following. To do anything else, I would need more details.

1. Uninstall the keyboard driver.
2. Reboot the computer (without reinstalling the driver).
3. When it restarts, it should reinstall the driver on its own.

If this doesn't work, you may wish to try connecting an external keyboard and see if it works fine. If it does, then it could be the keys themselves that are the issue.
Since you don't actually mention what is going wrong with the keyboard, you can try the following. To do anything else, I would need more details.

1. Uninstall the keyboard driver.
2. Reboot the computer (without reinstalling the driver).
3. When it restarts, it should reinstall the driver on its own.

If this doesn't work, you may wish to try connecting an external keyboard and see if it works fine. If it does, then it could be the keys themselves that are the issue.
 
Solution