Restart router internet comes up for 5 seconds then drops

So had a random issue start about an hour ago. My internet dropped. I restarted the router. Internet came up for a couple seconds then drops again. Tested multiple times and it kept happening. Plugged my network cable directly into modem and no problems. Move it back to router and same issue. I did try rolling back firmware to see if an update may have caused the problem and it kept doing it after roll back.

Any advice or someone who has seen the same issue and resolved it would be appreciated.

Router is a linksys.
 
Have you pushed the RESET button and/or power cycled the router yet?
 
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