I will try to be as descriptive as possible. Any questions and I will happily answer them. I bought a 40" screen to use for my computer to replace my previous 22". Needless to say it was a little bigger than I thought so I went back to my 22". However, now my computer only gets past the Windows (XP) loading bar and then the screen says "Frequency not supported". I coudln't figure out why this was happening since it worked fine both before and with the giant screen. To troubleshoot I had a DVI-VGA converter (my video card has both) and it worked perfectly fine when I used that. I used another 19" in monitor I had lying around so I put it in the VGA port and it worked fine. I a assume that something happened between the 40" screen and reverting to the 22" but I am still stuck. Of course I can leave it in the DVI slot but I don't want to if I don't have to. Thanks in advance.