Could you tell us how your Roku device is powered? 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.
Re: Device is stuck on the letters ROKU and does not load the menu
When reporting problems it's always a good idea to report your Roku model and model number as shown via Settings > System > About. Often the answers you seek depend on your Roku model and if we have this information to start with, you can get targeted suggestions more quickly.
I've seen this problem with Roku models that have an SD memory card installed. If the card gets corrupted, when the Roku starts up it gets stuck at the "dancing letters" stage and won't go any further. Try powering down, removing the SD card, and powering back up.
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Re: Roku express se queda congelada la pantalla en Roku y no inicia
At the beginning I used the USB port of my television after that I used the charge of wall in both cases not working the weird is my Roku was working fine before the update after that not work any more and I don't can reset or anything else because not pass the Roku letters and led blue blink slow help me please!! The model is Roku Express