Win 8-onscreen keyboard issue

So recieved new nano today along with asus AIO touchsreen PC running windows 8
got straight into it but when pressing set twice and bringing up onscreen keyboard the first press of a key the keyboard dissapears and text box closes , only way to remedy was to plug in a keyboard
tried in many different places , group[s, positions,lists etc no joy
running 8.0 and latest hog pc
any thoughts