I have a laptop and I have to reset mine every time I go to the game.
As, for the other issue. Some had a sound card issue so try that, other's was graphic card issues they had to redo theirs. You can also try removing LC, cleaning your PC/Laptop and then install LC again.
You might want to read the different post in this Tech Help by Andy to http://www.aeriagames.com/forums/en/viewtopic.php?t=1170810
Please post back if you still have trouble after trying all this.
Hope this helps. Thank you