I have a Dell XPS 400, with a Pentium D 2.8 GHz processor, 3GB of RAM, and a ATI 5770 GPU. It has Windows 7 on it and I installed Ubuntu yesterday. It booted fine the first time, but today I left Windows 7 to boot into Ubuntu and all I get is a black screen with text reading:
GNU GRUB VERSION 1.99-21ubuntu3 minimal bash-like line editing is supported.for the first word, tab lists possible command completions. anywhere else tab lists possible device or file completions
The only thing I did when I was in Ubuntu after I installed it was install an ATI graphics driver.