I have a TP-LINK router running the newest firmware (firmware version: 4.7.11 Build 101102 Rel.60376n, hardware version: WR340G v3 081520C2). It has a cable connected from the ISP to the WAN port and broadcasts the Internet via WiFi in my house. I have a few computers and smartphones that use it.
After a few hours of work the LAN network stops working (the devices don't see each other, on a wireless connection). However, the Internet still works. I cannot use a wired connection as all of my devices are laptops or smartphones and it will be highly inconvenient.
When I try to enter the router configuration page, it does not respond. Even
ping 192.168.1.1 does not work (waiting time exceeded). Pings to other devices do not work either.
Network configuration (on a host that I'm working right now):
IPv4 address. . . . . . . . . . . : 192.168.1.100 Subnet mask . . . . . . . . . . . : 255.255.255.0 Default gateway . . . . . . . . . : 192.168.1.1
The LAN network "works" for a few hours after I reboot the router by switching the power off and on.
Is there anything I could try other than replacing the device with a new one?