So I recently bought a brand new hp computer with 2TB hard drive because my old rig had died on me. I transferred over my solid state intel drive (which is about two weeks old) and my corsair rm1000 power supply (about a week old) and everything was working like a dream. The issue came when I tried to install my nvidia geforce gtx560 card. I'm sure it's seated correctly, and I have it connected to the PSU with two separate cables, but when I try to power on the system, I get a 6 beep error code from the mobo. My mobo is an MSI 2AE0 with AMI BIOS, so apparently this means "8042 gate A20 failure - bad cpu or mainboard". There is nothing wrong with the CPU or board because when I disconnect the nvidia card and go back to the built in AMD card, the system works fine. The only things I can think of at this point is that I either need to install the driver before installing the card (didn't need to on my old rig on Windows 7, not sure if it's different on 8) or the card is not compatible with the motherboard. Does anyone know if they are?