hello, i bought the hd 7700 using vga connections. okay so in order for me to get a display when i every i start my computer. i have to un plug and then plug back in the dvi in the back of my computer. i have been doing this for months now idk if there a problem with the card or computer. i am using a vga converter into a dvi. should i not be doing this will it harm my card please tell me thank you.