guys i borrowed hd7850 card from my friend because mine was TOO old. and i thought maybe 350w psu wont be enough so i borrowed 470w psu and changed both graphics card and psu now hd7850's fan is running but my pc is not detecting hd7850 help me what should i do [i7 6700k - 16ram - h110m-d(this motherboard is compatible with hd7850) - 470w psu]