Hi, Which Model Roku do you have?
The pinhole reset button is just that- it's recessed into that hole and requires a paperclip to press inside and hold down for 8 seconds then release.
Also, consider removing the power cord from the back of the Roku for 10 seconds and plugging back in.
If you have no luck with either of these, then reply back with the model of the Roku, what exactly it is doing or not doing, and how long you have owned it for.
Were you able to press the reset button?
Please tell me exactly what you did.