I installed Ubuntu using WUBI, windows installer.
It asked me to boot and while booting, it offered me to start using Ubuntu. I chose Ubuntu and a screen came saying I can go to options menu using Esc, if I entered Esc, it asks me which mode I'd like. I entered demo mode. It then froze for a while with a black screen before shutting down automatically.
I then restarted again and didn't enter Esc. It took me to a black screen again. Which key would get me to grub so I can enter my system again.
I have a 1 GB nVidia graphics card.