Processor & Cache Memory Intel Core i5 Processor 520M/450M : 2.4 GHz - 2.26 GHz, with Turbo Boost up to 2.93/2.66 GHz; Intel Core i3 Processor 370M : 2.4 GHz Chipset Mobile Intel HM55 Express Chipset Main Memory DDR3 1066 MHz SDRAM, 2 x SODIMM socket for expansion up to 4GB SDRAM Display 14" 16:9 HD (1366x768) LED backlit Video Graphics & Memory NVIDIA GeForce 310M, with 1GB DDR3 VRAM Hard Drive 2.5" 9.5mm SATA 640GB,5400rpm 500GB,5400rpm;7200rpm 320GB,5400rpm Optical Drive DVD Super Multi Double Layer Card Reader 5 in 1 card reader SD,MMC,MS,MS-Pro,XD Video Camera 0.3 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 3 x USB 2.0 ports 1 x RJ45 LAN Jack for LAN insert 1 x HDMI Audio Built-in speaker and microphone Altec Lansing speakers SRS Premium Sound Keyboard 19.0mm size Battery Pack & Life 8 cells: 5600/4400 mAh 84/63 Whrs 6 cells: 4400 mAh 47 Whrs AC Adapter Output: 19 V DC, 3.42 A, 65W Input: 100~240 V AC, 50/60 Hz universal 3/ 2 pin compact power supply system Dimension & Weight 33.0 x 24.0 x 1.65~2.68 cm (W x D x H) 2.1 kg (with 8 cell battery) 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.