I have a Toshiba Laptop. A while back I was dual booting Ubuntu 12.04 and Windows 7, although recently I wasn't using Ubuntu for anything so I decided to delete the Partition and forgot to change the bootloader. My computer ran fine until I had to restart it. Then grub rescue.
I've tried looking up various commands and it gives me the Unknown command notification. I've also tried booting from cd but that gave me no results. I looked in the bios and it didn't even give me an option to boot from cd. It does have a boot from usb one so I tried putting Ubuntu onto a flashdrive, but it told me to remove all discs and other media when it was the only thing plugged into my computer.
Any other help would be appreciated.