I just dual-booted Windows 7 and Ubuntu. Everything worked, and I've been able to switch between them. When running Ubuntu, I've always had it stuck at the splash screen (Ubuntu sign with the dots) or at a purple screen, but waiting or pressing Esc has always worked, while recently it hasn't. I can't get past the booting, so I can't get to the desktop.
Please note I'm new to Linux and don't know much, other than how to get to the "grub" screen - and now I can't even get past the grub screen, as soon as it boots it goes straight to that.
Can anyone help?