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Download drivers Lenovo G780 Notebook for Windows 8 32/64 bit
Chipset
Intel Chipset Driver for Windows 8 (32-bit, 64-bit)
Version : 9.3.0.1021
Released : 24 Oct 2012
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Audio / Sound
Conexant Audio Driver for Windows 8 (32-bit, 64-bit)
Version : 8.54.44.50 (Smart Audio: 6.0.145.0)
Released : 24 Oct 2012
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Display / VGA
Intel Video Driver for Windows 8 (32-bit)
Version : 9.17.10.2828 (HD Audio: 6.14.0.3097)
Released : 24 Oct 2012
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Intel Video Driver for Windows 8 (64-bit)
Version : 9.17.10.2828 (HD Audio: 6.14.0.3097)
Released : 24 Oct 2012
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Nvidia Video Driver for Windows 8 (32-bit)
Version : 9.18.13.697(PhysX: 9.12.0613)
Released : 23 Dec 2012
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Nvidia Video Driver for Windows 8 (64-bit)
Version : 9.18.13.697(PhysX: 9.12.0613)
Released : 23 Dec 2012
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Touchpad
TouchPad Driver (Synaptics, ElanTECH) for Windows 8 (32-bit, 64-bit)
Version : 16.2.10.13/11.4.10.2
Released : 23 Dec 2012
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HDD / Storage
Intel Rapid Storage Technology for Windows 8 (32-bit, 64-bit)
Version : 11.5.4.1001
Released : 23 Dec 2012
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Camera / Webcam
Camera Driver (Bison, Chicony, D-Max) for Windows 8 (32-bit, 64-bit)
Version : 1.12.824.1/6.1.7600.0167/13.12.824.1/3.4.5.13/6.2.8400.10186
Released : 23 Dec 2012
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Card Reader
Realtek Card Reader Driver (RTS5178) for Windows 8 (32-bit, 64-bit)
Version : 6.1.8400.39030
Released : 24 Oct 2012
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Bluetooth
Bluetooth Driver (CyberTan, Liteon) for Windows 8 (32-bit, 64-bit)
Version : 12.0.0.1671 (BTW 12.0.0.1820) / 8.0.0.206
Released : 24 Oct 2012
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Lan / Ethernet
Atheros LAN Driver for Microsoft Windows 8 (32-bit, 64-bit)
Version : 2.1.0.7
Released : 24 Oct 2012
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Wi-Fi / Wireless Lan
Intel Wireless LAN Driver for Microsoft Windows 8 (32-bit, 64-bit)
Version : 15.5.0.42
Released : 24 Oct 2012
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Wireless LAN Driver (Liteon, CyberTan) for Windows 8 (32-bit, 64-bit)
Version : 10.0.0.209/6.30.59.26
Released : 23 Dec 2012
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Intel WiMax Driver for Windows 8 (32-bit, 64-bit)
Version : 7.5.1007.26
Released : 24 Oct 2012
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Download Lenovo ThinkPad W520 Drivers for Windows 8/7/XP
Compatibility and system requirements
Windows 8
windows 7
all drivers Support 32bit and 64bit

Lenovo ThinkPad W520 Specifications:
* 15.6-inch FHD (1920 x 1080) LED backlit display, 95% color gamut, matte, 16:9 ratio
* Microsoft Windows 7 Professional (64-bit)
* Intel Core i7-2920XM quad-core CPU (2.50GHz, 8MB cache), Intel Turbo Boost 2.0 (3.50GHz)
* NVIDIA Quadro 2000M w/2GB DDR3 VRAM GPU switchable to Intel HD Graphics 3000
* 8GB DDR3 RAM (4GB + 4GB)
* 500GB at 7200 RPM SATA hard drive (Seagate Momentus)
* Multiburner combo drive
* Intel Centrino Advanced-N 6205 (802.11 a/b/g/n wireless) and Bluetooth
* 9-cell Li-ion battery (94Whr), 170W and 20V adapter
* Lenovo Fingerprint Reader
* Dimensions: 14.68" x 9.65" x 1.29-1.44"
* Starting at 5.75 lbs with 9-cell battery and at 5.40 lbs with 6-cell battery

How to install Lenovo ThinkPad W520 driver controller :
1. Download drivers needed, see below for drivers list
2. Open the file has been downloaded, double click on the file
3. Follow the instructions that appear during installation
4. When finished check device manager, if the hardware that we install is working correctly, then the drivers installation process has been successfully.

Download drivers Lenovo ThinkPad W520 for Windows 8/7/xp 32/64 bit
Chipset 
Windows 8 32/64 bit 
windows 7 32/64 bit
Audio / Sound
Conexant Audio Windows 8 32/64 bit
windows 7 32/64bit
VGA / Display
NVIDIA Optimus for Windows 8 32 / 64bit 
windows 7 32  /  64bit
Touchpad 
Synaptics UltraNav driver for Windows 8 32/64bit 
windows 7 32/64bit
Fingerprint 
Windows 8 32 / 64bit 
windows 7 32  /  64bit
HDD / Storage 
Windows 8 32/64bit 
windows 7 32/64bit
Card Reader 
Windows 8 32/64bit 
windows 7 32/64bit
Lan / Ethernet 
Windows 8 32/64bit 
windows 7 32 / 64bit
Wi-fi / Wireless Lan
Intel Wireless LAN Windows 8 32/64bit 
windows 7 32/64bit
Intel Wireless Display for Windows 8 32/64bit 
windows 7 32/64bit
Bluetooth
windows 7 32 / 64bit
Camera/Webcam
Windows 7 32 / 64bit
USB 3.0 
Windows 7 32 / 64bit