windows 10 Dell Optiplex 755 Intel 82566DM Ipv4 not connected

I can't get connected to the internet. I get the message not connected. Connection on other computers working fine. I think it started when I tried to updat the driver. Intel says adapter not supported for windows 10.  I can't find the generic driver. Also, get a error 651. Can anybody help?

Thanks

Dick Prosser

deprosser@comcast.net