How to reset your D-Link DIR-841 - AC1200 MU-MIMO Wi-Fi Gigabit Router? Find the Reset button at the backside of your router. Press and hold the Reset button for 10 seconds and then release the same. After this, your router will reboot instantly. You will see that the WAN light will not blink anymore. That is the sign of router resetting. Router has been reset successfully. To login to your router page again, you can access the default credentials. For more details visit dlinkrouter.local.