What is wrong with our wii?

-When the Wii turns on it says to press "A" and when I try to press A it doesn't work. The four little dots on the bottom of the Wii flash blue and thats normal but then they stop flashing and usually after they flash the first dot stays lit because it's saying your player number one or whatever. When you press A nothing happens and you can't turn the Wii on with the power button on the remote, but the power button on the Wii works. We tried unplugging everything and letting it sit for a while then turned it back on but that didn't work, and my brother tried pressing the red button on the remote where you insert the batteries, and then he pressed the other red button under the power button on the Wii to try to reconnect the remote or something and that didn't work either. None of the four Wii remotes work. Does anyone know what's wrong?It sounds like your wii sensor is bad. To test if that's the case, try puting 2 little candle lights in place of where the sensor would be. Make sure there's no other light to distract it. Then try to sync the remotes. IF it works, you know the sensor is bad. They are cheap- around 12 bucks to replace them.happens to mine all the time, i had to get new ones
Try changing the battery? Or charging it. That might help