I have about half of the parts for the PC I'm looking to build, but there was a problem with the mobo's delivery that could set the whole thing back quite a bit. Basically, I'm worried that either the GPU or CPU will be DOA, but I won't be able to know until potentially after the 30 day period Superbiiz allows for returns and refunds ends. I'm thinking maybe I should return the GPU and CPU now, and purchase them again when I have the rest of my parts handy. Is that my best choice, or is it possible to replace a part you didn't have the opportunity to use until after the return and refund period has ended?