Download the file to a working PC. Insert a blank USB flash drive (minimum 1 GB capacity). Download a free burning utility like Rufus or ISO2Disc .

: Insert the media into the locked computer and restart. You must enter the BIOS/UEFI settings (typically via F2, F8, or Delete keys) to set the 1st Boot Device to your CD/USB.

Open the burning utility and select your connected USB drive under the section.

You have the legal right to reset a password on a computer you own. Using it to bypass security on someone else's computer without permission may be illegal.