OK Solved!! Firstly talking to a local networking company they suggested I should be using port 16 of my GS116 Netgear router, this is the one intended to be connected to the router. I was using port...

I have tried the following configuration to further isolate the problem. I conntected just the modem/router, a different switch (gs105) and a laptop, using all the same cables. The modem / router...

Further Testing I disconnected everything at the patch panel, leaving only a laptop patched directly into the switch which is connected to the modem/router. Turned off wifi on laptop Switched off...

@Kevin_Z Got a few minutes to retry the new modem. I changed the default gateway ip to 192.168.1.254, rebooted everything in modem/router, switch, pc order. No network addresses on the ethernet i...

@Kevin_Z Thanks for the reply, I havent had a chance to try out your suggestion but the IT guys at work came to a similar conclusion. They reckon the Netgear switch and the new modem/router have the...

I reconnected the ISP's modem/router and ethernet network has reconnected. I did establish with a laptop networked directly to the switch I could ping the new modem router, but not from any other PC...