CPU: Intel Pentium Processor OS: Genuine Windows 7 Home Premium Display: 15.6" WXGA HD 1366x768 LED backlight System Memory: 2GB/4GB DDRII (Max 4GB) Chipset: Mobile Intel GL40 Express Chipsets Video Graphics: Intel GMA 4500M Hard Disk Drive: 250/320/500GB2.5"9.5mm SATA HDD 5400rpm Optical Disk Drive: 12.7mm Super Multi DVD RW I/O Port: USB(2.0)*3, DC-in Jack , RJ45, CRT, HDMI, ExpressCard, Mic-in, Earphone-out, 5-in-1 card reader(SD/MMC/MS/MS/xD Pro Memory Card) Audio: 1.5 Watt Speakers*2, Internal Mic-in Communications: LAN: 10/100/1000Mbps Ethernet Base-T Wireless LAN: 802.11b/g Wireless Webcam: 1.3 Mega Pixel Security: Kensington Lock Battery: Li-ion 4-cell Dimension: 369(W) x 260(D) x 35.61~43.27(H)mm Weight: ~2.66kg (w/ 4-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.