To fix Netgear Nighthawk modem not working, you are supposed to follow and apply few important instructions. Just try to turn off the wireless function and then you can simply and directly connect to your computer to the router with an ethernet cable. Now, you can simply reboot the computer and then check out for an internet connection. Once you do follow and apply few important instructions. If you are stuck and want to resolve the issues then you can also take help from the experts and technicians. Follow and apply few important instructions that are given here. Just apply the steps, and so you will be able to resolve the issues.