Trouble adding 2nd GPU with Excavator

[lae64]

I was on nanopool mining Excavator with one Zotac GeForce GTX 1060 gpu card for about a week  and added an Asus GeForce GTX 1060 and downloaded the Driver.  It Won’t recognize Asus gpu.  How do you add another gpu?   excavator.exe -a pascal -s pasc-eu1.nanopool.org:15555 -u EXCHANGE_ADDRESS.YOUR_PAYMENT_ID.YOUR_WORKER/YOUR_EMAIL -d 2 -ca