Hello. Somehow when my screen flickers while trying to install the graphics card, on the last flicker the screen goes black after the brightness changes. Before the install I couldn't change the brightness without the graphics card installed. I went to the Device manager to uninstall the Video Game Controller (VGA Compatible) display then after I do that the graphics card installs and then repeats a black screen. So then when I reboot I can't make it to the login screen because there's a black screen with the actual graphics card installed. Please help. Give the most advice. Thanks!