Nvidia factory setting

how do i revert all the settings in nvidia control panel back to it’s original factory configuration?

also, there are a bunch of profiles in the global driver setting option, one of them was doom 3, which i happened to play quite often on my pc, but never used the profile before. so if i switch the profile to doom3 when i play the game on my pc, will there be any improvements or optimazations?

thanks for the help.