Losing 360 'dashboard"

I keep losing the 360 dashboard and have to restart my laptop to get it back, 3 times just today. Which, of course, means I have to log back in every time. It actually appears to still be working just can't get the dash board without restarting. I have already uninstalled and reinstalled a while back for the same problem. Running Windows 7 with all updates current. 360 is the latest version and always updated.