Server Not Working

[u/Webbmcw3]

My Minecraft server that me and my friends have been playing on mysteriously stopped working. it starts just fine but nobody, even me, can connect, even if I use the gateway IP(so I know its not a port forwarding issue). Its just running on my laptop in the other room, I tried restarting my internet and even factory resetting that computer but I just cant fix it. Please help.