What do you know. Actually it was on this site!
The printer is "de-programmed" and can be reset to "Out of the box" factory default settings by following these six steps:
1. Turn printer off.
2. Press and hold both the "Load/Eject" and the "Cleaning" buttons.
3. While holding these two buttons, turn the power back on and continue to hold.
4. Count five seconds.
5. Release the two buttons and then press and hold just the "Load/Eject" button (withe some models of the E750 the necessary button may be the "Cleaning" button).
6. Continue to hold "Load/Eject" (or "Cleaning" respectively, see step 5) until printer's lights flash, then release button.
Printer should now be reset and the "Hidden Counter" of which's existance conspiracists pretend to know is set to zero again.
ci21
June 2009