Start with the simple checks
When a printer suddenly stops printing, the fastest path is to separate the problem into four areas: the printer itself, the connection, the computer, and the print software. Check the printer display for an error, confirm that paper and consumables are loaded correctly, and make sure the device is powered on.
If the printer is connected over Wi-Fi, confirm that the computer and printer are using the same local network. A printer can appear offline after a router change, Wi-Fi password change, sleep cycle, or network reset.
Check the print queue
Open your operating system's printer settings and look for documents waiting in the queue. A single failed job can block every job behind it. Cancel the stuck document and send a small test page.
Restart the Print Spooler on Windows
Windows uses the Print Spooler service to manage print jobs. If the queue is frozen, restarting the service can clear the condition. Open Services, locate Print Spooler, stop it, clear stuck files from the printer spool directory if necessary, and start the service again. Microsoft documents this process as part of its Windows printer troubleshooting guidance.
Install or update the correct driver
A printer driver allows Windows to communicate with the printer. The safest approach is to identify the exact model and operating system, then obtain the current driver or printer software from the printer manufacturer's official support site. Avoid random driver-download websites.
Remove and add the printer again
If the printer still fails, remove it from the operating system and add it again. This can rebuild the printer connection and force Windows to discover a current driver.
Print a test page
After every major change, print a test page. A successful test page confirms that the basic communication path works and helps you avoid changing several settings at once.