How do I know I've installed all the Windows 7 drivers?

[mirileh]

(the woes of installing without Lenovo downgrade disks:) how do I know I've downloaded and installed ALL the drivers for Windows 7? If I installed drivers for all devices with question marks in the device manager - can I assume I got them all?

[dr_st]

You cannot install all drivers. But if you have no unknown devices in the device manager, then you've installed all the drivers you need.