sungjaesinI can't RMA the card (thanks EVGA "Superior customer service team") because it's barely past warranty XFX replaces cards regardless of warranty if their customers are having difficulties, because they know what REAL customer service is. On a sidenote: Im not going to buy PC anymore, just going to get a Mac from now on, never have these issues ugly issues
rickmc3280I am having similar issues with the 780 SC. I gave it to my nephew while they have been waiting in the Queue for the 360 ( or rather I have since they have me do their IT stuff). The card worked great and was operating fine until after it took some sort of windows update and the driver for it became incompatible with windows. Now it wont start up unless in safe mode. I have done DUA uninstall and can now get it to load normally, but the drivers are uninstalled so there is no more ability to game with it. Ive tried several Nvidia Driver versions that dont work. When I go to Device manager, it finds the 780 but says that it is giving it warnings and has disabled it. I assume a few things based on research but was hoping someone else had found a fix...Assumption 1: Issue with Driver Signing...Assumption 2: Windows has a setting somewhere that makes the 780 Incompatible. Also tried... I went back to Nvidia Driver 399.xx and that did not help at all. I also installed from Geforce Experience, and that did not help anything. I always end up having to run DUA to remove drivers. I have not tried the safe boot with driver signing disabled... and plan to this evening. Was hoping OP maybe found a solution too as it seems most people quit responding after they find a fix.