So, Today i upgraded my CPU from an AMD Phenom II X6 to an Intel i7 4790k. I changed my motherboard to an ASRock 97 Extreme 4. everything worked perfectly fine, i reinstalled windows, i installed all the drivers. then i tried to install the driver for my Zotac GTX770, but GeForce Experience told me that there wasn't any compatible graphics card found. in my device manager i could only see the Intel HD graphics. no sign of my 770. the fans are rotating. Any help is appreciated.