Hey, I don't post often, but I'm having this problem with an HP Mini 311. I've installed Ubuntu 10.04, and it runs like an absolute dream from the Live USB.
However, when I boot from the Hard Drive, all I get is the flashing cursor, no ISOLINUX, grub, or anything of that sort. I can post boot information upon request. It would be great if anyone would give me a solution, I already tried reinstalling.