Problem with wubi installation

Question

I am getting a black screen with the following message when I reboot my PC after the installation via WUBI. I tried again and again but still I get this screen and then it's stuck.

Message : 
pwconv: failed to change the mode of etc/passwd- to 0600
Shadow passwords are on.
Generating locals...
and it continues for a few more lines and then stops.

What is that I am doing wrong?

Answer 1

This answer is based on bcbc's comment.

This appears to be a graphics card issue. So try using the nomodeset boot option.

First try post #8, Method 2 (summarized as follows):

1. In windows open X:\ubuntu\install\wubildr-disk.cfg in a text editor, where X: is the drive where you installed Wubi.

2. Add nomodeset to the end of the line that looks like:

   linux /vmlinuz root=UUID=$diskuuid loop=/ubuntu/disks/root.disk preseed/file=/ubuntu/install/preseed.cfg wubi-diskimage ro quiet splash
   

   So this line will now be:

   linux /vmlinuz root=UUID=$diskuuid loop=/ubuntu/disks/root.disk preseed/file=/ubuntu/install/preseed.cfg wubi-diskimage ro quiet splash nomodeset

If this doesn't work, press and hold Shift while you select Ubuntu in the boot menu. If a GRUB menu comes up, you'll need to use the instructions for installed, non-Wubi systems (see also this question).