OEM machine Acer Aspire M5700
OS : Vista sp2
HDD : Hitachi SATA 2

Winload.exe is busted and Vista can not boot.
Windows Boot Manager says that winload.exe " . . . is missing or corrupted."

An article states that Knoppix Live CD can restore or re-build Vista's winload.exe.

I am ignorant of the Linux system and a 2-month-new-born baby to Ubuntu family.
Please teach me the steps and commands for carrying out the task.

Thank you very much !