WARNING: DO NOT, I REPEAT, DO NOT RESET THE ROUTER UNLESS YOU ARE 100% SURE THAT SOMEONE YOU KNOW (ISP personnel, GeekSquad, relative who's really smart, w/e) CAN SET UP THE INTERNET AGAIN.
When you reset the router through that little pinhole via a paperclip, it TOTALLY RESETS EVERYTHING. It resets your DNS and external IP address to zeros, which will disable your access to the internet. MAKE SURE YOU KNOW WHAT YOUR DOING.
Everyone assumes that resetting the router to get the default password will go handy dandy like a picnic. It doesn't. It resets all settings, all everything.