If you see a "PCI Controller" or "PCI Simple Communications Controller" with a yellow exclamation mark in your Device Manager, it means Windows hasn't identified the hardware or lacks the software to run it.
: Press Win + X and select Device Manager .
The first step is to figure out exactly what the "PCI Controller" is.
The most important part is the VEN (Vendor) and DEV (Device) codes (e.g., VEN_8086&DEV_1C3A ). 2. Common Drivers Needed Most "missing" PCI controllers fall into these categories:
If you see a "PCI Controller" or "PCI Simple Communications Controller" with a yellow exclamation mark in your Device Manager, it means Windows hasn't identified the hardware or lacks the software to run it.
: Press Win + X and select Device Manager .
The first step is to figure out exactly what the "PCI Controller" is.
The most important part is the VEN (Vendor) and DEV (Device) codes (e.g., VEN_8086&DEV_1C3A ). 2. Common Drivers Needed Most "missing" PCI controllers fall into these categories: