USB
HP Pavilion dv4-1220us AMD USB Filter Driver
AUDIO
IDT High-Definition Sound Audio CODEC Driver
GRAPHIC
HP Pavilion dv4-1220us AMD Graphics Video VGA Driver
HP DVB-T TV Tuner External Expresscard Driver
FINGERPRINT
HP Pavilion dv4-1220us Validity Fingerprint Sensor Driver
TV TUNER
HP Integrated Digital TV Tuner Driver
TOUCHPAD
HP Pavilion dv4-1220us ALPS Touchpad Driver
HP Pavilion dv4-1220us ENE CIR Receiver Driver
HP Multi-WWAN Driver Installer for Windows Vista & XP
WIRELESS
Broadcom Wireless LAN WLAN Driver for Windows Vista
CARD READER
JMB38X Card Reader Host Controller Driver
LAN DRIVER:
ftp://ftp.hp.com/pub/softpaq/sp43501-44000/sp43984.exe
Multimedia software:
HP MediaSmart TV Software
HP MediaSmart MVP Software
HP MediaSmart DVD Software
HP MediaSmart SmartMenu Update
HP DVD Play