How to Reset a Logitech Wireless Keyboard
Even though your Logitech wireless computer keyboard is not directly connected to your computer, it still has a device driver associated with it that is installed in your operating system. If you want to reset your Logitech wireless keyboard, you must uninstall and then reinstall this device driver. Luckily, with the help of the Windows operating system, this process doesn't require much input from the user.
Right click on the "Computer" desktop icon. Typically this icon is found in the upper left corner of your desktop, but it is possible that you've moved it. You can also find it by clicking the "Start" button in the lower left corner of your desktop.
Click "Device Manager." This button is on the left side of the screen.
Right click on the listing for your Logitech wireless keyboard. Click "Properties." Click the "Driver" tab, and then click on the "Uninstall Driver" button. This will remove the device driver that is associated with your Logitech wireless keyboard from your computer.
Remove the USB wireless-keyboard dongle and restart your computer. When your computer boots back up, plug the dongle back into a USB port. Your computer will recognize the new hardware that you've just attached and automatically reinstall the driver for the Logitech wireless keyboard. Your keyboard will now be reset.