I have 3 unsupported devices in my device manager on Windows 7 64 (yellow question mark). They want a driver for the LPC Interface Controller 1c46. But I don't know where I can find a driver. It seems that the devices have something to do with ACPI/Powerbutton and something like that. What are these devices and where can I get a driver. I is very annoying to see these yellow question marks in my device manager. Nethertheless my system runs fine.
You've probably not installed chipset drivers INF_allOS_126.96.36.1990.exe
Or Management Engine Intel® ME: Management Engine Driver for Intel 6 Series Chipset-Based Desktop Boards
Mostly chipset drivers must do the job. They "explain" to motherboard which parts, controllers it has on it.