posted this 05 October 2017
The most common cause of crashing with Kodu is bad graphics chipset dirvers. You need to figure out which chipset your computer uses and go to the manufacturers web site to install the latest driver.
If that doesn't work I can help you to figure out what's going on.
Which version of Kodu are you using?
When it crashes, does it give error information? If so, please email the info to me at email@example.com so I can try to see what's happeing.