After I flashed my BIOS (should not have done that without knowing what I'm doing) my computer wouldn't start, so I gave my PC to computer repair shop. They flashed it again and now it only boots with on-board graphics. After searching online I found out that to make it work with a graphics card I have to change Initiate Graphics Adapter to PCI in the BIOS. When I got into my BIOS the Initiate Graphic Adapter option was missing, the only setting in the North Bridge is IGD memory.