Also take note if there is a pushpin that locks the card in like your memory slots, as some motherboards use it as a safety measure.
You don’t need excessive force, so if you encounter a great deal of resistance, take another look at the backplate and PCIe slot to make sure both are clear and the motherboard is properly aligned. Also take note if there is a pushpin that locks the card in like your memory slots, as some motherboards use it as a safety measure.