My laptop is an HP DV6-6121 TX (with 4GB RAM, 2GB ATI Radeon 6770M graphics card, and Intel Core i7 processor). I have installed GTA 4 and COD 7, but both these games seem to lag. I have set them on performance mode. Also COD 7 doesn’t have sound during gameplay and the game does not automatically get saved after the first small following mission after the cutscene. Could updating graphics drivers/BIOS help?