You might have to go into your bios and disable the onboard GPU. Just make sure you have the card in the right PCIe slot and it is a 2.0. If it is a 1.0 could have problems. since you didn't post your specs.
We don't know what your rig is about. You can also go into the devise manager and under display adapters it will bring up your integrated GPU and you can disable it there.
How bad is the chiped pin? Is it enough that it will not make contact within the PCIe slot? If after trying what I said and no go try it in another PC to see if it works or not. If it doesn't work then you know to RMA it. I do wish you good luck on this.
It worked! I went into bios and switched it to my PCIE and now it works! Thank you sir!