Failed installation has left some form of grub on my hard disk.

I had a failed installation that ended in a ‘grub>’ command prompt. I was unable to figure out how to start anything. Essentially my Toshiba Satellite (IntelCorei7) was rendered useless. I was able to get the system running again but it seems that whatever version of grub that was written to my hard drive is still hiding out somehow. How can I remove it?

What do you mean? “Got the system running” “still hiding out” ?