Quote Originally Posted by bcbc View Post
If you installed with wubi, then don't reinstall grub.

I have seen problems with the latest kernel dropping people in a busybox prompt. I recommend booting your previous kernel, e.g. -23

I don't know of a fix, but if -23 (or your previous kernel if not -23) works then just remove -24.
I have no other kernel, just a recovery mode which is also useless..