| Feature | API/Mechanism | |---------|----------------| | Access PCI config space | HalGetBusData , HalSetBusData (legacy) | | Enumerate PCI devices | SetupDiGetClassDevs with GUID_DEVCLASS_PCI | | Read/write BARs | MmMapIoSpace | | MSI-X support | IoConnectInterruptEx with VERSION | | Wake-on-LAN (PCI PME) | PoSetDevicePowerState |
PCI\VEN_8086&DEV_1E03&SUBSYS_...
The PCI (Peripheral Component Interconnect) bus is the backbone of your computer's internal communication. In Windows 7, a "PCI Device" listing with a yellow exclamation mark in Device Manager is one of the most common headaches for users. It usually means the operating system recognizes there is hardware plugged into a motherboard slot but lacks the specific instructions—the driver—to make it work. pci device driver windows 7
A fully functional PCI driver enables the following: pci device driver windows 7