I bought a Roku Express in August and a few weeks ago it started "acting up". When watching something, it would suddenly and randomly go back to the Roku's home page. After dealing with this for a few weeks, I finally decided to try and reset my Roku. Now I just get a black screen. If I unplug the device and plug it back in, I get the bouncing Roku page and then after a few moments it goes black. I even did the reset button in the back of the device and I just get the same results. Can someone please help?