To install the best driver for your keyboard, uninstall the original driver and allow Windows 7 to reinstall it after rebooting.

If updating the keyboard driver does not make any difference, you can try reinstalling it. To do that, right-click the keyboard driver in Device Manager and select Uninstall device.

After uninstalling the keyboard driver, restart your system. After restarting the device, Windows will select the hardware changes and reinstall the missing keyboard driver.