In case your router’s firmware gets corrupted that doesn’t mean you will have to buy a new router. Once you find the power LED blinking continuously on the router that means your router’s firmware is corrupted. You can simply go ahead and update the firmware or you can run some common diagnostics like-
Powercycle the router
Assign a static IP address for the computer
Reset the router
Ping the router
How to powercycle the router This is the most common solution for most of the problems related to your routers. It hardly requires 30 seconds of your time. What you need to do is unplug the router for around 30 seconds and you call also remove other cables too like ethernet chord and Internet chord.
Assign a static IP Address to your computer Since DHCP is not working on the router you will have to assign a static IP address to your connected computer.
Reset the router You need to press and hold the factory reset button on your router for around 30 seconds. Depending upon the model number of Linksys router you have can find the reset hole either in the back or at the bottom. After this unplug the router for 10 seconds and plug it back in.
Ping the router You can do the Ping test to check the connection between the router and the computer. During ping, test computer sends the signal to the router and in return, it sends back packets.