My computer hangs when playing any 3d games although I've already set my settings for best performance in Nvidia control panel, I've also keep my driver up to date, the working temp is 48 to 52 degree C. I've use a diagnostic software, all of my hardware ( processor, memory, hdd etc) passed except my video card, only 2d test is ok . My system configuration are: MSI P35 Neo 3 mobo, Intel Pentium 2.0 Ghz dual core, 1Gb of ram (DDR2 800), Inno3d Geforce 7300GT, 160GB hdd space, my OS is Windows XP with SP 2.