I'm trying to install Ubuntu 11.04 from a USB. My computer does load the USB file and I get some sort of BIOS-like screen where I can choose between 'Install from USB' and 'Boot-up from USB'.

When I entered the corresponding number my screen resolution is totally messed up. I see that Ubuntu is starting up when I used Boot from USB, but the screen looks the same as you'd have a too high screen resolution. Same story with Install from USB.

I can see the screens loading and the menu's and stuff, but not clearly because it load in a too high screen resolution.

I'm trying to dual-boot is with Windows XP and max. screen resolution is 800x600.