1. Check the Power Connection Ensure that the printer is properly plugged into a working power outlet. Sometimes, a loose connection can cause the printer to remain off. Try plugging another device into the same outlet to verify that the power source is functioning. 2. Inspect the Power Cord Examine the power cord for any visible damage or fraying. If the cord looks damaged, it m... https://www.technical-help-support.com/hp-envy-7640-not-printing/