A few days ago I used the convertor to hook up to a VGA monitor on a couple of different ones. I tried it today and the computer won't recognize the display and start using it. I am even currently trying it with a dual-link DVI LCD and it won't work. Is it a hardware problem or are there any things I should try. The only things I have tried is clicking detect displays and then also hitting the F7 key--the one that changes the external display type. I am even currently hooked up to power. Thanks!