Had a nvidia mx4000, bought a fx5200 and after pluging it into the slot the old graphics card was in, the monitor won't go on but if I put the mx4000 back in, it works perfectly fine
Use this to remove the old drivers with your GPU still installed, then take out the old GPU, install the new one, and install the drivers for that card.
Use this to remove the old drivers with your GPU still installed, then take out the old GPU, install the new one, and install the drivers for that card.