virtualbox.org

When I try to start the virtual Linux system from *.iso disk image there is an error in displaying.
At the beginning everything is in order.
But then the image becomes distorted.
I have tried Lubuntu, Xubuntu and Mint: the same result. With Windows systems everything is in order.

Minimal information needed to be able to help

And perhaps a screen shot so we all know what you mean by distorted.