Here, you'll find a clear and detailed toolkit for resetting your Canon MG2540S.
Inspect the copper-colored electronic contacts on the back of the cartridges.
directly to a wall outlet (avoid using surge protectors or extension cords during this test). Reconnect the USB cable to your computer. Turn the printer on and run a test print.
After a reset, the printer often thinks the ink is full when it is actually empty, leading to dry printing and damage.