I have just recently purchased a Visiontek ATI Radeon X1300 card for my computer, which is pretty much just a base model Dell Dimension 4550 from 2002 (except with 512mb more of RAM). My computer meets pretty much all of the basic minimum requirements for the card, but after I put it in the computer and try to start it up, it makes a constant beeping sound and I get no picture... I have no real idea of what to do.