Wii won't power up? How to reset your Wii's AC power adapter
Every Wii owner eventually runs in the problem where their Wii won't turn on and has no power light. The initial reaction is "DAAANG! My Wii is broke!!" -- Well, it might not be! Your Wii might just need to have its AC Power adapter reset. Here's what you'll need to do:
Unplug the Wii's AC adapter from the unit itself and from the wall outlet or power strip.
Keep the AC adapter unplugged at both ends for a full 2 minutes.
After the 2 minutes, plug the AC adapter back into the Wii and DIRECTLY into a wall outlet and NOT a surge protector or power strip.
If you see the power light come on, then you've successfully reset your Wii's AC power adapter.