Keep asking. Usually, they are not going to give you a flat out NO. I would personally check if both of the cards are the same brands, and, the PCI slot is working in your computer. If you’ve got a working PCI card, then try it in the PCI slot and see if it works.
For video editors, finding the perfect portable workstation is like catching a unicorn. It is no easy task to find the perfect balance of performance vs price point.
