RBR750 Changed network from spectrum to orbi. Windows 10 desktop won't recognize orbi network. No

1. You have an RBR750.

2. What modem/gateway is it connected to? The Orbi isn't a modem. It needs to be connected to a gateway

3. What does the desktop say for its connection?

4. Did you try a different ethernet cable? Or is it connecting over wireless? You don't say

5. What wireless card is in the desktop if its wireless? And what driver is installed?