Asus P5LD2-X - Manual (Page 95)

ASUS P5LD2-X 4-37
Load Setup Defaults
Allows you to load the default values for each of the parameters on
the Setup menus. When you select this option or if you press <F5>, a
confirmation window appears. Select <OK> to load the default values.
Select Exit & Save Changes or make other changes before saving the
values to the non-volatile RAM.-