I had an SBG6580-2 router/wifi in service for 2-3 years, until this week.  Had a power outage, and the router would not reconnect to Xfinity service (for a couple of days).  Checked with neighbors--they had service (with Xfinity supplied router).  Bought a new router/wifi unit (SBG10) and attempted, for the rest of the day, to install it, without success. Next day I reset the unit and my computer was able to access the WiFi service.  However, the computer wold not recognize my wireless printer (printer off-line), and my ROKU TV, nor other ROKU access devices, could not access the WiFi service.. 

That’s where I am now.

Other questions:  When I enter the indicated IP address (192.168.0.1), I get a page with User Name - admin, and Password -blank, and an “Apply” button.,  An I supposed to enter a user name and password of my own, or just use “admin” and “password”?  I’ve tried both ways and still can’t get my TV/devices connected.   Can I (should I) reset my router?wifi to “factory settings” and start over.  If I do that, what can I expect to have to do?.