I just received my gt780r MSI and trying to update the latest driver for the GPU for NVIDIA site. I downloaded the portable version of 275.33 to win 7 64 bit and when I try to install, it says that is not compatible device for your system. GTX 560 has gt780r but I unable to know why I cannot install this? I triple checked to see if I downloaded right drive or not. So far only let me install driver included 268.12 for this laptop GPU. Can anyone tell me why and how to fix this? I'm in Windows 7 Ultimate 64-bit version. Please help me.