To replace ink cartridges in the HP Deskjet 3755, first, turn on the printer and open the front cover to access the cartridge compartment. Wait until the cartridges move to the center. Press down gently on the old cartridge to release it, then pull it out. Unbox the new cartridge, remove the protective plastic tape, and slide the new cartridge into the corresponding slot until it clic... https://www.toevolution.com/how-do-i-reset-my-hp-3755-wireless-printer