So I have a HP Pavilion and I'm wanting to switch my Dedicated Radeon HP 7450 with a Nvidia Quadro P600 and perhaps later something more powerful. I'm having trouble switching from AMD to Nvidia, as after removing the AMD drivers and using DDU to remove the remainder drivers, removing the old GPU, and inserting my new GPU, my computer gets stuck with the blue HP splash screen and also produces a beeping sound every 30 seconds or so. I can't download drivers until I have the new graphics card but I can't run Windows with it. Am I doing something wrong?