Cannot access router management

[uptownvideo]

I have not been able to access the router management page using a computer or mobile app since lately.  I have tried chrome, safarit, firefox and the Genie app.  I even tried my laptop hard wired ethernet.  This is a cable modem/router combination.  I did try to power cycle it last night but I got the same results when it came back online.  It works fine for internet, but I do like to have access to the router managemnet occasionaly.  

[plemans]

You have the C6300?

did you try using its ip address? or using the routerlogin address?

Try 192.168.1.1

or 

192.168.100.1

[uptownvideo]

Yes the model is C6300.  I tried that router IP and routerlogin.net in different web browsers.  It has always has been 192.168.0.1.  

[plemans]

did you try the modem side? 192.168.100.1

[uptownvideo]

yes I tried that also.  

"Safari Can't Connect to the Server"

[plemans]

Have you tried a factory reset? 

Push and hold reset for 7-15 seconds while powered on?

[uptownvideo]

I have not done a factory reset as that is probably too drastic to do now.  Will that erase all configs such as SSIDs and passwords?  

[plemans]

Yes. but you can put in the same ssid/password when you reinstall and devices should auto-reconnect

[uptownvideo]

I may try that tonight.  Thanks.