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- HP Community
- Notebooks
- Notebook Hardware and Upgrade Questions
- Unknown Device missing driver for EliteBook 8440p

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03-30-2019 06:13 PM
Hello Community,
I recently upgraded my Elitebook 8440p to Windows 10 64-bit. Device Manager says I missing the driver for the an Unknown Device:
The drivers for this device are not installed. (Code 28)
There are no compatible drivers for this device.
To find a driver for this device, click Update Driver.
Hardware IDs:
ACPI\VEN_HPQ&DEV_0004
ACPI\HPQ0004
*HPQ0004
Where can I find the driver to resolve this issue?
Thanks in advance!
03-30-2019 06:29 PM
05-20-2019 11:00 PM
The unknown device is the fingerprint driver which is incompatable with windows 10 This also make Windows Hello incompatable. The TrackPad driver is incompatable also it will not scroll web page or the Windows 10 application menu. but when I was a Windows Insider they built in a method to lock out the trackpad driver and then you have to install the PS2 compatable moiuuse driver.