Ur 22 windows freeze

Dear users,

I recently bought an ur 22 audio interface. All well and done, however. Everytime it is connected to my laptop windows will freeze sooner or later. Sometimes after 30 minutes, sometimes after an hour or two. When the unit is disconnected it doesnt happen. It has never happened before either. Does anyone know what could be the cause? I have the latest drivers installed for it.

Lenovo ideapad z 580
core i7
8gb ram
windows 7

Any suggestions? I like the unit and rather not return it. Thanks!