Processor Intel Core i5 480M 2.66 GHz Intel Core i3 350M/370M/380M 2.66 GHz ~ 2.26 GHz Intel Pentium Dual-Core P6200/P6100 2.13 GHz Chipset Intel HM55 Express Chipset Memory DDR3 1333 MHz SDRAM,2 x SO-DIMM socket for expansion up to 8 G SDRAM Display 15.6" 16:9 HD (1366x768) LED backlit Graphic NVIDIA GeForce GT 540M with 1GB/2GB DDR3 VRAM Storage 2.5" SATA 750GB 7200rpm 640GB 5400rpm 500GB 5400rpm/7200rpm 320GB 5400rpm Optical Drive Super-Multi DVD Tray-in Blue-ray reader Card Reader 4 -in-1 card reader ( SD/ MS/ MS Pro/ MMC) Camera 0.3 Mega Pixel web camera Networking Integrated or 802.11 b/g Built-in Bluetooth V2.1+EDR (Optional) 10/100/1000 Base T Interface 1 x Microphone-in jack 1 x Headphone-out jack 1 x VGA port/Mini D-sub 15-pin for external monitor 3 x USB 2.0 port(s) 1 x RJ45 LAN Jack for LAN insert 1 x HDMI Audio Built-in Speakers And Microphone Altec Lansing Speakers SRS Premium Sound Battery 6Cells: 4400 mAh 47 Whrs Power Adapter Output : 19 V DC, 4.74 A, 90 W Input : 100 -240 V AC, 50/60 Hz universal Dimensions 38.0 x 25.5 x 3.57 cm (WxDxH) Weight 2.62 kg (with 6 cell battery) Security BIOS Booting User Password Protection HDD User Password Protection and Security 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.