Hi,
You should never downgrade an OS unless you can find All the drivers for it.
I am not familiar with this unit, but I will give it a try, NO GAURANTEE
First did you backup your Vista OS? You may need the backup if this fails.
Here is your SPECS:
http://h10025.www1.hp.com/ewfrf/wc/d...roduct=3819624
The following drivers should ba EXTRACTED to a folder and installed through the Device Manager manually. DO NOT run the EXE file.
Chipset Driver:
http://www.nvidia.com/object/nforce_...nxp_18.11.html
Video Driver:
http://www.nvidia.com/object/geforce...9.28_beta.html
This should get you on the internet.
Update to SP2 only (at this time). DO NOT install SP3
You will also need Net Frame work 2.0:
http://www.microsoft.com/downloads/d...displaylang=en
UAA Driver:
http://h10025.www1.hp.com/ewfrf/wc/g...reg_R1002_USEN
MUST be installed prior to the sound driver
Audio:
http://www.mediafire.com/?dg0cmmkm4y4
Unzip to a folder.
Run installer. If it errors use device Manager.
From Device Manager:
Right click "Audio Device on HD"and choose Update driver
Select the following:
No to connect.
Install from a list or specific location.
Don't search I will choose the driver to install.
In the list of common hardware types, scroll down and select Sound, Video, and Game controllers.
Remove the check from "Show Compatible Hardware".
Click on "Have Disk".
Next...browse to the unzipped folder and choose the "WiSVHe5.inf".Ignore XP when it complains
Reboot
Modem:
http://h10025.www1.hp.com/ewfrf/wc/g...reg_R1002_USEN
This must be installed for your sound to work
Wireless Lan depending on model:
WLan:Atheros
http://h10025.www1.hp.com/ewfrf/wc/g...reg_R1002_USEN
WLan: Broadcom
http://h10025.www1.hp.com/ewfrf/wc/g...reg_R1002_USEN
HDMI Driver:
http://www.nvidia.com/object/nforce_...10.3.0.23.html
Here are the remaining XP Drivers for your model:
http://h10025.www1.hp.com/ewfrf/wc/s...roduct=3819624
By this time you should have almost everything up and running.
Please post any errors you have remaining in the device manager.
Hope this helps,
Bill