If you've ever loaded Windows from scratch, I'm sure you've run into this problem a time or two (or if you're like me, thousands of times)..... The problem? A yellow question mark that says "Unknown device", "Other Devices", or "PCI device".
Well, what is this device? Where do I start to find the drivers? Well, thankfully there's a way to find out what that device is and who manufactures it.
The easiest way, is to go to device manager, right click on the offending device, and choose properties. Then, if you click on the details button you should get a box that displays something similiar to this:
PCI\VEN_8086&DEV_284B&SUBSYS_20AC17AA&REV_03\3&B1B FB68&0&D8
the
Vendor number is just after
VEN_ which in this case would be
8086
the
Device number is just after
DEV_ which in this case would be
284B
Now that you have these numbers, you can go here:
PCI Database
Simply plug those numbers in the appropriate box, and click search. If it's in the database, it will display the vendor and the device.
Screenshots below: