First and again first of all, this is my suggestion base on my analysis for this model. Install and report back the progress.
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
Intel Video Driver: Intel Media accelerator 4500M
or
Realtek Card Reader.
Bluetooth Stack For windows 7
Realtek Wireless LAN
Atheros Wireless LAN
Intel Wireless LAN (Vista, 7)
Intel Matrix Storage Manager
Toshiba HDD protection for Windows 7
Modem Driver Windows 7
MODEM Set Region (windows xp/vista and 7)
WEBCAM Application for Windows 7/Vista/XP
(32-bit 64-bit)
Touchpad (windows 7)
Realtek Audio Drivers
(32-bit 64-bit)