Install the chipset first and reboot before installing other drivers:
http://www.nvidia.com/object/nforce_nf4_winxp32_8.26_11.09.html
Graphics:
http://www.nvidia.com/object/winxp_2k_162.18.html
Audio:
Download
Ethernet,try this driver:
Download
Modem:
Download
Gemtek Wireless,requires SP2:
Download
Keyboard:
ftp://ftp.hp.com/pub/softlib/software7/COL15201/ob-40564-2/sp26752.exe
chipset Intel 945G:
Download
ViiV:
Download
Your audio is Realtek ALC888:
sp33867
load UAA first:
Download
then:
Download
Your LAN Realtek RTL8201CL
8201 from realtek:
HP generic:
Download
Original HP Multimedia Keyboard/Mouse Drivers
Download
Original Gemtek USB Wireless LAN Driver
Download
This may or may not work on the TV tuner:
Download