htc one m8 dot view problems

[olivernorthrow]

i brought an htc one m8 a couple of days ago and i really like it but now i press the power button to wake it up it comes up with the dot view thing (pixelated time and weather) and i've turned it on and off by holding the power and the volume key but that dosent do anything, ive held the power key and that took me to the menu of flight mode, kids mode and the option to restart it, i tried click on that and noting happened, i tried clicking on the home and back buttons and still nothing.

please someone help.