Hello guys! Like the title says, I have a Radeon HP HD 7570 2GB graphic cards on my Gateway DX4870 with Windows 8.1 64 bit. The problem is that every time that I install this video card, the screen goes black/blank/dark not even showing the bios. In the other hand, this video card works perfectly if I install the same video card on my Lenovo computer. I was trying to disable the PCIE slot to boot from the integrated video card until I install the proper drivers or I could trouble shoot the video card directly from Windows. However, the Gateway DX4870 does not give that option. I really would like this card to work for my system. Any help will be greatly appreciated! Thanks!