The problem on nvidia network controller ethernet adapter\

hi...well my problem start when i figured out that why i cant connect to internet its because of corrupt network drive..it shows there yellow exclamation win port and the network controller is enabled yet i cant connect....so i look for updates but i thing i made a mistake i installed a new one but it says there for me to continue i should uninstall the former so i did basically because it there so it became ethernet then i finally connect but my problem sometimes i cant and i have to update it again and again and i think i have more than one network adapter and my local area connection become 7 from 0 you know what i mean "Local area connection7"..so please help me as soon as possible..thanks!