1.If you hear sound and can connect to wireless no need to install wireless and audio drivers.
2.If at the device manager there are no yellow mark on graphics no need to install unless you see the screen pixel or low performance.
3. Right click on the installation file and select "run as administrator" to install.

CHIPSET:
IntelChipset SW Installation Utility for windows 7
Download

Intel Video Driver.
Intel Media accelerator 4500M
Download (windows 7)
Download (Windows Vista)
or
Automatically detect drivers

Realtek Card Reader.
Download

Bluetooth Driver: (7/Vista/XP)
Download

Bluetooth Stack For windows 7
Download

Realtek Wireless LAN
Download

Atheros Wireless LAN
Download

Intel Wireless LAN (Vista, 7)
Download

Intel Matrix Storage Manager
Download Windows 7
Download Windows XP/Vista/7

Toshiba HDD protection for Windows 7
Download

Modem Driver Windows 7
Download

MODEM Set Region (windows xp/vista and 7)
Download

WEBCAM Application for Windows 7/Vista/XP
(32-bit 64-bit)
Download

Touchpad (windows 7)
Download

Realtek Audio Drivers
(32-bit 64-bit)
Download