Vpn taking out network?

I have an issue I can't find much about.

I noticed that when my work vpn disconnects for whatever reason,and tries reconnecting, it takes out my whole network.

I know it's not the other way around (i.e. the network disconnecting takes out my vpn) because when i unplug my work computer, all other computers start working again. If i plug it back in and it still can't connect, it takes the network out again.

I'm totally confused as to what's going and how or why it would happen, anyone have any idea?

I tried 2 different routers so it shouldn't be that and all lights on my modem look good (and again, works fine the moment i disconnect the work computer)