will bios revert back to previous version if i do system restore?

with all the problems im having im thinking of doing system restore and starting over fresh ..

 

i updated bios yesterday .. if i do a system restore for a week ago will bios go back to previous version ??

 

i guess ima uninstall the video driver ..

 

reinstall the old card ..

 

and then perform system restore ..

 

im hoping bios will revert too ..

 

but if not ..

 

is there a way for me to roll it back ??

 

if so .. how ??