[LUGSB] How to get rid of Linux GASP!

[nishah]

Need to get rid of it on one PC. Get the following problems.

 GRUB version 0.93 (639K lower/390912K upper memory)

[Minimal BASH-like line editing is supported. For the first word, TAB
list possible command completions. 
Anywhere else TAB list the possible completions of a device/file name.]

grub>_

then if i press tab it gives me a list of commands of which none work
because all linux info is gone except GRUB (boot loader)

we put fdisk on a bootdisk but it wont delete the boot loader of linux,
so we'd like to know how to get rid of Grub