How do I troubleshoot printer driver issues for an HP LaserJet 1020 that isn't printing?

Outdated, corrupted, or incompatible printer drivers are a common cause. First, go to 'Device Manager' (Windows) or 'Printers & Scanners' (macOS), locate your HP LaserJet 1020, and remove or uninstall it. Then, visit the official HP support website, find the specific drivers for the LaserJet 1020 compatible with your operating system, download, and install them. A system reboot after installation is often necessary.