The correct answer is 'Download and install the latest printer driver from the manufacturer's website' because drivers are the software components that enable the operating system to communicate with the hardware device. If the device is not working after being connected, it often means that the driver is out-of-date, missing, or corrupt. Downloading the latest driver ensures compatibility and functionality. 'Restarting the computer' might sometimes resolve temporary communication issues, but it is less likely to solve a problem with printer functionality if the driver is incorrect. 'Changing the printer's USB port' might resolve an issue if the initial port was dysfunctional, which is less common. 'Reinstalling the operating system' is a drastic step that is unnecessary when addressing printer driver issues and would result in a significant loss of time and possibly data.