ACPI/HPQ0004 PCI Unknown Device Driver [solved]

Q. Hello, I have a HP laptop showing ACPI/HPQ0004 unknown device and I need to find the right drivers. I saw you helped Dell users with a similar problem… Can you help me with this one too? Here is the deal:

Clean Windows 7 install on my HP Pavilion DV6. Every other HP driver is working perfectly and Device manager looks great EXCEPT!!! I have an unknown device with listing ACPI/HPQ0004. Please help as I really want to get the right drivers for Windows 7 so my laptop will be in good shape. Thank you in advance for your help! -Paul R.

A. Certainly, I am glad to help. Here is a driver for Unknown Device ACPI/HPQ0004


HP driver dl link (ftp)

local mirror (http)

Those links are for an HP Service Pack/Driver that will install 3D Driveguard and should solve the Unknown Device in Windows 7 Device Manager. Let me know if it works for you!

Q. UPDATE from Paul R.

THANK YOU, that finally solved my problem!!!!

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