Processor & Cache Memory Intel Core i7 Processor 720QM : 1.6 GHz with Turbo Boost up to 2.8 GHz ; Chipset Mobile Intel HM55 Express Chipset Main Memory DDR3 1066 MHz SDRAM, 4 x SODIMM socket for expansion up to 16GB SDRAM Display 15.6" HD (1366x768)/Full HD (1920x1080) Video Graphics & Memory NVIDIA GeForce GT 425M with 1GB DDR3 VRAM Hard Drive 2.5" 9.5mm SATA 640GB,5400rpm 500GB,5400rpm;7200rpm 320GB,5400rpm;7200rpm Optical Drive DVD Super Multi Double Layer Blu-ray RW Blu-Ray DVD Combo Card Reader 5 in 1 card reader SD,MMC,MS,MS-Pro,MS-Duo Video Camera 2.0 Mega Pixel web camera Fax/Modem/LAN/WLAN Integrated 802.11 b/g/n Built-in Bluetooth V2.1+EDR (optional) 10/100/1000 Base T Interface 1 x Microphone-in jack 1 x Headphone-out jack (S/PDIF) 1 x VGA port/Mini D-sub 15-pin for external monitor 1 x USB 3.0 ports 2 x USB 2.0 ports 1 x RJ45 LAN Jack for LAN insert 1 x HDMI 1 x WLAN On/Off Switch 1 x E-SATA (USB2.0 Combo) Audio Built-in speaker and microphone Bang & Olufsen ICEpower SonicFocus Battery Pack & Life 6 cells: 4400 mAh 47 Whrs AC Adapter Output: 19 V DC, 4.74 A, 90 W Input: 100-240 V AC, 50/60 Hz universal Dimension & Weight 39.1 x 26.6 x 3.05~4.05 cm (W x D x H) 2.90 kg (with 6 cell battery) Security BIOS Booting / HDD User Password Protection Try to set a system restore point before installing a device driver. This will help if you installed a wrong driver. Problems can arise when your hardware device is too old or not supported any longer.