1. Check if the printer is powered on and connected to the network.
2. Check if the new ink or toner is compatible with your printer model.
3. Remove the old ink or toner cartridge from the printer.
4. Confirm that the printer is in the 'Ready' mode.
5. Gently insert the new ink or toner cartridge into the cartridge holder keeping the label side up.
6. Close the printer cover.
7. Allow the printer to detect and align the ink/toner cartridge.
8. If the printer is still not recognizing the new cartridge, perform a reset and try again.