HP Pavilion ZD7140us Laptop (3.0 GHz Pentium 4, 512 MB RAM, 60 GB Hard Drive, DVD-ROM) Operating System: Microsoft Windows XP Home Edition Multimedia: InterVideo WinDVD SE Player, Microsoft Windows Media Player, Microsoft Windows Movie Maker Security and Support: Symantec Norton Antivirus (complementary 60 days Live Update) Internet Solutions: AOL Dial-Up, MSN Dial-Up, Earthlink Dial-Up Power : 120W AC adapter, 12-Cell Lithium-Ion battery Dimensions : 15.67 inch (L) x 10.94 inch (W) x 1.67 inch (front H) 1.85 inch (rear H) ; Weight : 9.4 lbs