I just got my Roku Express yesterday and I'm very frustrated! It keeps reverting back to the Home screen EVERY thirsty minutes!! I have tried resetting it multiple times! I'm going to use my 'outdated' Roku stick that works perfectly if this is what I'm in for! Not impressed at all!!
Could you tell us how you are powering your Roku device? Is it connected to the USB port of the TV or to a wall outlet? In some cases, the USB power provided by the TV is not sufficient to power the device. Even though your Roku device may appear to be working, running with insufficient power can lead to instability, crashing, and other unpredictable behavior.
Using the included power cord and power adapter, we suggest plugging your Roku into a working power outlet in the wall. Powering it through a power outlet in the wall has the additional advantage that your Roku player will not need to power up every time you turn on your TV. This means your Roku player will be up and running faster than it would be connected to a TV.