20 Most Recent Arris SURFboard Gateway SBG6580 DOCSIS 3.0 Wireless Cable Modem - Page 9 Questions & Answers

If you have the model number we can assist you. There are several things that you need to know. Your password to the modem if you have changed it, You need to be able to connect directly to it with a network cable,

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open cmd prompt: ipconfig - enter key find default gateway address and put it in the address bar of your browser and press enter. login is usually admin - user and admin for password

contact the source provider for the modem such as your service provider or the manufacturer for a trouble shooting walk thru

This site says 25Mbps. It isn't a router. https://www.cox.com/residential/support/arris--motorola-tm502g.html

Do you have any parental controls set to cut off the internet at 8p?

I had the same problem different wireless driver...it could be the wrong driver...what version of Windows? What you can do is take a note of the driver being used, roll back the driver if you can ..I'm not sure what windows your on..but this worked for me with all the window updates drove me crazy. Windows tech support also stated, all the drivers they provided may not work even though they supplied them..so drivers may have to be reinstalled to work properly. I hope this help..