CPU upgrade now system does not recognise GPU

Sneaky28

Honorable
Feb 13, 2014
15
0
10,510
I recently upgraded my cpu from an i3 3220 to an i5 3570k. The gpu I have is an Asus 7850 and when I installed my new cpu for some reason my system does not recognise my Gpu. I have tried using the old cpu and the system recognises my Gpu again.

I have updated my drivers, flashed the newest bios etc etc

I can only get a display on my screen when I connect the dvi cable straight to my mobo. Any help I'd really appreciate it