LinuxQuestions.org - [SOLVED] unkown filesystem. grub rescue

Well, first post after searching for it. I unfortunately couldn't find the answer, so here goes.

My laptop was running Vista just fine. I had and wanted to install Linux and chose Ubuntu. I installed it to a USB and booted using this USB. It installed just fine and ran fine one time as well!

When rebooting and wanting to run Windows, I got the diskcheck screen and let it run. Windows booted fine afterwards.

On my next reboot all I got and still only get is the following

Code:

error: unkown filesystem.

grub rescue>

So I've checked the forums and all mention a cd to reinstall. I can't burn a cd here, since my cd burner is in the laptop with the error. I've also lost the option to boot from USB in my bios somehow.

Can anyone tell my how to fix this or point me in the right direction?

Thanks!