This morning I woke up to this error - "Reboot and Select proper boot device" on my ubuntu installation.

I've checked to see that the BIOS detects the hard drive and it does, I also went through the installation process again and it detected the hard drive there, however when I use fdisk and having booted from a bootable disc, it can't find the drive.

Does anyone know how to resolve this?
Thanks in advance, Sposa03.