Pci Ven8086 Ampdev8c22 Ampsubsys309f17aa Amprev04 Patched |best| Jun 2026

If you are seeing a yellow exclamation mark in your Windows Device Manager for an "SMBus Controller" or "Unknown Device" with the hardware ID PCI\VEN_8086&DEV_8C22&SUBSYS_309F17AA&REV_04 , you are dealing with a common driver compatibility issue, particularly on older laptops and desktops. This identifier corresponds to the .

The hardware ID PCI\VEN_8086&DEV_8C22&SUBSYS_309F17AA&REV_04 refers to the Intel(R) 8 Series/C220 Series SMBus Controller

Browse to your modified INF folder, select the patched file, click , and then select OK . pci ven8086 ampdev8c22 ampsubsys309f17aa amprev04 patched

Locate the matching the 8 Series/C220 chipsets. Run the installer with administrative privileges.

The Intel SMBus Controller rarely causes a hardware failure. Instead, software layer discrepancies usually trigger the error: If you are seeing a yellow exclamation mark

) or fails to restart smoothly, locking up on a blank screen instead. Step-by-Step Installation Protocol

:

I can provide the exact INF lines or alternate driver packages for your specific system. Share public link

So what is this mysterious and why is it crucial? The term 8C22 is the key: it refers to the System Management Bus (SMBus) controller. Locate the matching the 8 Series/C220 chipsets

Open the extracted folder and navigate to the subfolder containing raw drivers (usually named All or Windows10-x64 ).