sudo apt-get update
Type: Posts; User: cyrixware
sudo apt-get update
Host is Windows and your VM is Kali.
You can ping vice-versa or both?
Are you trying to login from Kali to Windows?
Try to login as a root user or you may try this below:
sudo passwd [username]
If you allocated less amount of memory in your virtual machine for instance it takes time to load the gui.
Have you tried to restart it? Is it in 64bit? bootable USB?
Are you trying to install in Virtual Machine?