Windows Unidentifed Hardware?

Hello,
How do i configure OS Unidentify Hardwares? Some hardwares are unable to identify os i sow them in "Devise manager". I don't know what are them. After that i try to find their drivers online(using Devise manager), but its say drivers up-to-date. So how do i get their drivers, some hardwares "Hardware ID's " not show. And also Devise manager show yellow triangle in some hardwares. Why is that?
Please help me!