What sort of graphics card does your notebook have?
Unlike previous versions, Crazytalk 6 requires more graphical horsepower and often older cards, especially if they have outdated drivers do have problems like this.
The first thing to do is to try and get the latest graphics and sound drivers available for your machine. You should be able to get these from Dell themselves.
If after you have updated your graphics drivers (also update Crazytalk to 6.2) you still have problems, please contact Support using the link below. They will be able to help you further to resolve this issue.
http://www.reallusion.com/CustomerSupport/User/QForm.aspx
Thanks.
Peter
Forum Administrator
www.reallusion.com