Jul 15, 2025 · In Device Manager, right-click on the PCI Express Root Complex and select "Properties." Navigate to the "Driver" tab and select "Roll Back Driver" if the option is available. …

Apr 11, 2018 · I have recently had to wipe and re-install windows 10 due to administrator issues from doing windows updates. Since then I have a hardware issue, one driver won't …

Oct 2, 2019 · Is the root complex the main facilitator of memory mapped IO. As in, is the root complex responsible for detecting addresses that map to devices and in turn forward said data …

Jan 28, 2018 · PCI Express Root Complex (Express Card 34mm USB 3.0, 2 Port) Hi, I am running: DELL Latitude E6320 WINDOWS 10 PRO (Version 1709) (OS Build 16299.192) I …

Nov 16, 2022 · Hi, I purchased new Probook 240 G8 Laptop. After installing the Windows 11 i am see one driver is not installed. under the other devices it shows unknown devices. I look …

Feb 16, 2015 · I'm facing same issue on my EliteBook 8540p - Windows 8.1 Enterprise " UnKnown Devices on PCI Express Root Complex", following are my hardware Ids, kindly …

Jul 24, 2023 · Hi: There are dozens of different possibilities for that device name. If you post the hardware ID for the PCI Express Root Complex device, I will post the link to the driver you …

Sep 1, 2022 · 7 I have a question related to the PCI Express protocol. I managed to understand most of the features of the PCI Express protocol but could not entirely understand the …

Apr 6, 2020 · Solved: After installing Windows 10 a driver is missing: PCI Express Root Complex Device ACPI\HPQ0004\3&b1bfb68&0 requires further installation. Can - 7537733

Jan 28, 2019 · Hi, After some updates I noticed there is an Unknown Device located on PCI express root complex. I am unable to update it, and solutions to similar issues found on …