This Ge Microwave Touchpad Not Working guy is because the Touchpad doesn't work when you use it as an input field, it's also due to the fact that the Touchpad is located on the front of the machine. When you use the Touchpad as an input field, the Touchpad becomes active and the Microwave will work.
The Microwave Touchpad Not Working is because the Ge Microwave Touchpad is manufactured of plastic and imparts a broken plastic corner, you can fix the corner by using a drill and a drill bit to a regular hole in the corner. The fan is moving the metal Touchpad and because of this, the fan is wanting to remove the metal touchpad, you can try to open the Touchpad with your hand and try to push the metal Touchpad back into place. If it still doesn't work, you may need to have the Microwave replaced, if the Microwave Touchpad is Not working, the first button will Not work and will have a light flashing "m" instead of a "0". It can be replaced with no worries of it breaking.