How can I fix a Droid Razr Maxx's power button?

Suddenly, today, the power button stopped working. I tried to turn off the screen and it wouldn't. Everything else works just fine. Eventually the screen timed out, and wouldn't turn back on. Plugging it into a charger turns the screen back on, but that's fairly useless away from power... I had heard that soft reset (power button+volume down) fixes it, but not even that worked. It would only register it as volume down. I plugged it into adb and rebooted it that way, to no avail. What can I do?