OS: Genuine Windows 7 Home Premium, Genuine Windows 7 Professional
CPU: Intel Core i3 / i5 / i7 Processor (Sandy Bridge)
Display: 15.6" 1366x768 LED backlight
System Memory: 1GB/2GB DDRIII, 2 slots (Max 8GB)
Chipset: Mobile Intel HM65 Express Chipsets
Video Graphics: Intel HD Graphics 3000, NVIDIA GeForce GT 540M 2GB
Supports NVIDIA Optimus Technology
Storage: 320/500/640/750GB 2.5" 9.5mm SATA HDD  5400rpm / 7200rpm
Optical Disk Drive: 12.7mm Super Multi DVD RW, 12.7mm Blu-ray ODD support (optional)
I/O Port: USB(2.0)*2, USB(3.0)*2, HDMI, D-Sub, RJ45, Mic-in, Earphone-out, 7-in-1 card reader (SD / SDHC / SDXC / MMC / MS / MS Pro / MS Pro HG ), DC-in jack
Audio: 2 Watt Speakers*2, Internal Mic-in
Communications: LAN: 10/100/1000Mbps Ethernet Base-T
Wireless LAN: 802.11b/g/n Wireless
Bluetooth: Bluetooth V3.0+HS
Webcam: 1.3 Mega Pixel
Security: HDD Password, Kensington Lock
Battery: Li-ion 8 cell 4400mAH,63Wh
Dimensions: 380(W) x 262 (D) x 29.1~34 (H) mm
Weight: ~2.6kg(w/ODD and 8-cell battery)

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Note: Try to set a system restore point before installing a device driver. It will help you restore system if installed driver not complete.