I'll start from the beginning. I bought a new laptop two months ago , is working well . but when trying to run SC4 to remember old joys . I found a problem. runs very slow   My laptop specs . Asus N56VB Intel i3- 3120m 2.5Gzh Nvidia GeForce GT 740m Intel HD Graphics 4000 4Gb MRAM 700 Gb HDD S.O : Win 8 (not 8.1) The laptop comes with two video cards, the game runs with the second video , not the first . I've tried this :     and this:   http://pcgamingwiki.com/wiki/SimCity_4   I changed the file Graphics Rules.sgr With This line in: partialRule "Fast card" -any stringMatch cardIdentity "NVIDIA*GeForce GT 740M*"   and the file Cards.sgr Video With This line in vendor: "NVidia" 0x10b4 0x12d2 0x10de 0x0FDF card " GeForce GT 740M "   but doesnt work , I cant run SC4 With the Nvidia video card   Evidence from a log   appName = SimCity 4 version = 1.1.641.0 OSVersion = Windows NT 5.1 = GenuineIntel CPU sglDriverName = DirectX sglDriverVersion = 2.0 DRIVERNAME = nvumdshim.dll DriverVersion = 9.18.13.3165 , GUID: D7B78E66 -4226 -11CF- F373 - 7734A6C2CD35 cardName = Intel ( R) HD Graphics 4000 cardVersion = Vendor: 8086 , Device : 0166 , Board : 14771043 , Chipset : 0009 cardIdentity = Intel ( R) HD Graphics 4000   I 've tried many ways to make it run with nvidia video card , but nothing seems to work .   Any ideas?   Thanks in adavanced   Regards