The march of the zeros is a sign that your thermostat did not configure an IP address. There are many variables which can cause this:
When you press the tiny reset button, do you see a green light or a yellow light?
If it is green, the thermostat will display the last octet of its IP address in the left corner.
If the light is yellow, the thermostat will display the 5 digit provisioning pin in the left corner.
If the light is red, the thermostat is not connected and you may have to reset to factory default in the method wfisher describes:
Put the thermostat in OFF. Press the Menu button, press and hold the center of the menu screen, a two digit number will appear, tap the up arrow, and wait for the countdown to finish, then tap the down arrow.
If you still see red, how is your C wire connected? If you are using a transformer, make sure you are using a low voltage 16-24 V AC transformer with between 100-300 milliamps (about 1/3 of an amp.)