Appologies for what must be a simple question. I don't have much expertise with graphics cards and I only installed the HD6670 to give my computer HDMI out capability. It worked fine on my previous HP despktop running Windows 8.1 and I transfered it to my new box with the same OS, Intel I7 4770 3.4GHz and 16 Mb of RAM. AMD drivers were updated. Every time I attempt to boot up, I get a solid blue screen and have to power it down and restart. The computer then functions normally until the next time I boot up where it happens all over again. I'd really appreciate any tips. Thanks in advance.