Motherboard BIOS

Awhile back I was installing LAN card drivers, but I got the CDs fibbed up.
Flight Simulator and other chat
https://forums.simviation.com/phpBB3/
https://forums.simviation.com/phpBB3/viewtopic.php?f=9&t=23294
Is it possible for a CD to install a BIOS during start up? (By itself?) I think that's what it did. I dunno.
I'm just at ends at why this snnoying start-up feature I didn't want is installed and slowing my boot-up. Just as bad a spyware.