not to sure mate however..
have a look at the settings for what happens when you close your laptop lid by going-
start \ control panel \ hardware and sound \ power options
you should have at least 2 plans in there, whichever one has the blue dot indicating that, that one is currently selected, to the right of it is "change plan settings" click that..
then underneath the main options there is "change advanced power settings" in blue, click that..
scroll down and look for "power button and lid" click the little + beside it and see what it says for "lid close action"
i have mine set to do nothing, so make sure its not putting your laptop to sleep or anything as that may cause an issue..
im not 100% but its at least something to check
and im sure someone else will chip in with another suggestion, or someone else who has had the same problem and resolved it
are you leaving your duo in tablet mode and not using it for a bit, or turning the screen back to laptop mode and closing the lid?
i only ask as either way it might be going to sleep and sometimes ive had issues with devices not working properly after its gone to sleep and been woken back up.. so personally i dont really use the sleep function, hibernate seems ok but i dont really use that either lol
just a thought tho! need a little more info on what your doing and the lid settings
and someone else to shine some light on it too