Windows 7: delete entire networking system in win7 & reset to factory settings

hey,
i've totally messed up my network in Windows 7
and now want to reset it to factory settings (delete ALL present network adapters & then install only the basic default adapters)

i mean a fresh networking system

please anyone help me

did you mean,disable all adapter that not what you want right?

nope
as i can not install wan driver after uninstalling it ( i edit registry and try devcon but no luck )

>that's why i want to remove whole networking system & again install only basic default drivers