|Answer to questions asked in #1 would definitely help.|
As regards resetting you could try removing the power plug and battery, then holding the power off/on button in for about 20 secs. Probably won't help but perhaps a better option that what you tried.
Did this happen straight after you installed the printer? Hard to see why this would cause these symptoms but I guess it is possible.
Always pop back and let us know the outcome - thanks