I am an It tech at a school and I am having some issues with one of my new promethean boards. It is stuck on the select account screen and the touch portion is unresponsive so I cant do anything at all with the board. I tried a usb Keyboard and mouse but nether worked. The remote still “works” but all it can do is “freeze” and the blank button. I have restarted the board several times with no change. The firmware is up to date according to Mypormethean panel management. The modle number is AP7-U86.