I just bought a Roku ultra and while downloading a channel, the Roku crashed and froze so I unplugged it and plugged it back again. Now only the white light turns on but no display output nor audio. The controller's light blinks like its unable to find and pair with the Roku. I tried to reset it by pressing the reset button 10 seconds as the manual says and also leaving it pressed 30+ seconds but no response. Tried different HDMIs and different TVs but no luck.