Below are the simple steps that you need to carry out in order to reset the password of HP DeskJet 2600 EWS.
Step 1: First of all, turn off your printer device.
Step 2: After that, you need to press the Color Copy and Resume buttons and then hold these buttons. Now, don't leave these buttons.
Step 3: After that, you need to leave these buttons after 20 seconds.
In case this does not help you out with your problem, then there is a chance that you are using an old firmware that doesn't support the reset process.
With the help of a USB connection, you can easily update your printer device and then perform the reset steps one more time.