I have 4 computers all running Windows 7 networked in a workgroup through Billion 7404vgp-m wireless router. All drivers and firmware for wireless adapters and router are up to date.
Windows Firewall and Defender disabled. Disconnected ipv6. Running Nod 32 anti virus software. All have own static IP address
When I reset the router, all computers have Internet and LAN access for about 1 hour. And then they will lose the LAN connection but maintain Internet connection. Resetting wireless adapters or restarting computers does nothing to fix this but resetting router will.
What is causing this? How do I fix it?