I was trying to upgrade the video card on my computer from a radeon x300 to a radeon x1600 pro but when I tried to turn on the computer, it just beeps and there is no display. When I tried to replace the old one the same problem occured. There didnt seem to be enough space between the graphics card and the sound card for the new graphics card to fit so I moved the 56k modem out and then moved the sound card one PCI slot over. I also forgot to unistall the old drivers for the old video card.Can anyone help me fix it?