Moderator's note: Questions from new users with usernames in the forename+surname+number format nearly always turn out to be the precursor to spam. If a 'helpful' link from another new member appears here, I'll simply ban both members, resulting in the removal of this thread.
However, if we assume that this post is genuine for the moment, please see here:
https://www.pcmag.com/how-to/how-to-update-your-computers-bios
(I've been modifying and fixing computers for around a quarter of a century but I've never found any reason to flash the BIOS in one yet!)