Issues with computer communication via router Netgear Nighthawk

Any Nighthawk R series router models, please post about this here in this forum:

https://community.netgear.com/t5/Nighthawk-WiFi-Routers/bd-p/home-wifi-routers-nighthawk

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3drc wrote:

I think I am in the right spot to ask this......Hoping someone can help me figure out the issue I am having. I had to reset my modem becasue I dis the update and then had no internet. I reverted back to the previous version. Everything as far as intenet works great now. The issue I have is in trying to set up a homegroup. Both of them were at one time copnnected now they aren't. My two computers are not seeing each other so can't connect them. Something is not communicating right and I am not sure what.  Sometimes they will show up connected to wireless via Netgear 35 and others just show wireless. I am not sure if that is an issue or not.  I did recently have my modem die so I am currently using the cable companies modem so not sure if that is an issue either.  I have windows 7. Appreciate some directives! 

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