Millgo47 :
I installed my GTX 780ti but when I just turn on my PC it just sits at the very first screen I cant even enter Bios... I have tried the update for Bios but it says "System BIOS image is invalid please download patch again" and I cant seem to get anywhere. Anyone have any other ideas?
Please tell me that you got a new power supply when you purchased that graphics card. If not, that is most likely your problem.
As far as the BIOS goes you are going to have to try downloading it again and make sure that it is for the correct model. If you install the wrong BIOS you will brick your motherboard. They have a lot of steps to prevent users from installing the wrong BIOS. I wouldn't be surprised if you chose the wrong revision of your board.