Hello, I have a HP workstation xw4600 and a Gigabyte GeForce GTX 660 OC 1033MHZ 2GB. When a start the computer the screen stay black and there 6 beep (video error). I have put an old video card in the computer to try to configured the BIOS and enabling a LEGACY boot but I don't find it in the menu. My question is what can I do to get this to work?
Carl