Printer works hardwire but not wireless

[F1Fish]

The home network has a Savin 3515 on it. The Mac will print via wireless.
Win 7 uses to print wirelessly but not now. I can’t even ping the printer.
If I plug in the network cable the print works flawlessly.

What am I missing?

Thank you

 

[MtnMan]

Check your AP-isolation setting in your router. If enabled it will prevent wireless clients from communicating with each other.