PureOS Won't install on my laptop

I’m currently trying to install PureOS on my old Alienware Laptop. When I get to the part that says “Detect and mount CD-ROM” I’m given this message: “Some of your hardware needs non-free firmware files to operate. The firmware can be loaded from removable media, such a a USB stick or floppy. The missing firmware files are: ctefx.bin If you have such media available now, insert it, and continue.” When I click continue, it will try to detect it and bring me back to the same message as before.

What can be done to fix this error? I’m installing the OS off of a 32GB Flash Drive. Should I be doing something different?

Specs for my computer (Dell Alienware M14x R2): https://www.cnet.com/products/alienware-m14xr2-14-core-i7-3630qm-8-gb-ram-750-gb-hdd/specs/

As a side note, I have 12GB of ram in my laptop and a 465 GB harddrive. There’s also a separate 59.4 GB hard drive in the computer. My computer is running Windows 10. I had to reinstall Windows since the original hard drive died. When I did I put Windows 7 on it. Then I installed the Alienware Windows 7 Service Pack 1 for it. After that I upgraded it to Windows 10.

Please see: https://tracker.pureos.net/w/pureos/hardware_requirements/

Your device requires proprietary firmware to function (because of the nVidia graphics).