We do not know what kind of laptop this is, and you may have other recovery options.
The boot files have been corrupted, but there is a way to fix it if you have an XP install disk, or the manufacturer's system recovery disk.
The directions for a repair install are posted in this forum, fourth post from the top.
On a Dell laptop for example, hold down F8 while starting the computer. There are on many models, system recovery and repair options.