PCI Bus driver missing (Code 28)

[SubhaMukherjee]

I have HP e021tx PC. I installed all the drivers from HP official website. But in the device manager there is showing "unknown device" with the error code "PCI Bus driver missing (Code 28)". From where to install the driver. Please guide me.

Thanks.

[iomare]

Hi,

In device manager go to the unknown device and right-click on it. Click on properties and then click on the details tab. Now click on the tab curtain and go to hardware id. Post the hardware id here for further help.

Let me know,

David

[SubhaMukherjee]

Hi David, 

This is what I found:

Hardware Ids:

ACPI\VEN_HPQ&DEV_0004
ACPI\HPQ0004
*HPQ0004

Please help me out.

Thanks.

[iomare · Accepted solution]

OK. You need the HP 3D DriveGuard Software Driver

Try this one from link below:

ftp://ftp.hp.com/pub/softpaq/sp64001-64500/sp64144.exe

Hope it helps,

David

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Please click on accept as solution if answered your question

[SubhaMukherjee]

Hi David,

It's amazing. It worked. Thank you so much. I am really grateful to you. Take a huge love from me. I have a just simple query regarding this. If you answer me properly I will be more happier. 

What is the function of "HP 3D DriveGuard Software Driver" ? Why do we need this to install.

Thanks a lot.

with love,

Subha

[iomare]

Your welcome Subha,

Basically it protects the hard drive if the PC falls or is hit. Here is from HP:

"HP 3D DriveGuard protects 
the hard drive by "parking the heads" if the notebook is accidentally dropped or 
is abruptly impacted by another object."

Let me know if you need any further help.

All the best,

David

[SubhaMukherjee]

My Dear,

No more queries. Thanks a lot for your time. Have a nice day. 🙂