Having problems with my connection at home

[Mike_jo3]

I have just recently replaced my modem router for a new one.The old modem router was connected to a Ethernet wall socket that connects the 2nd floor to the 1st floor and then connected to a switch which then connects too the devices on the first floor. Since I changed into my new modem the no connection can pass through the internet wall socket. The switch cant detect any network connection and when i tried plugging in my pc straight to the wall socket on the 1st floor the PC stated the network cable was unplugged

 

[jsmithepa]

Make/Model old and new modem/router please.

 

[Mike_jo3]

Old: TP-Link archer VR 900 AC1900
New: NetcommWireless VDSL2/ADSL2+ DUALBAND AC1600

 

[Mike_jo3]

Make/Model old and new modem/router please.

Old: TP-Link archer VR 900 AC1900
New: NetcommWireless VDSL2/ADSL2+ DUALBAND AC1600