If your HP printer suddenly stopped working or Help 1-877-331-5006, check its power connection and restart it. Ensure the printer is connected via USB or Wi-Fi and is set as the default printer. Check the ink or toner levels and replace empty cartridges. Clear any stuck print jobs in the queue. Run HP Print and Scan Doctor to diagnose issues. Update or reinstall the HP printer drivers from the HP support website. Disable any firewall or antivirus that may be blocking communication. If it’s a network printer, ensure the Wi-Fi signal is stable and reconnect if needed.