After power failure wii system will not power up have unplugged from outlet and plugged back in still nothing

Try this:

Reset the AC adapter by following steps below.

1. Unplug the Wii AC adapter at both ends (from the back of the
Wii system and from the wall outlet or power strip).

2. After you've waited a full 2 minutes, plug the AC adapter back in on both ends and check to see if the power light comes on.Reset the AC adapter by following steps below.

1. Unplug the Wii AC adapter at both ends (from the back of the
Wii system and from the wall outlet or power strip).

2. After you've waited a full 2 minutes, plug the AC adapter back in on both ends and check to see if the power light comes on.

1. • 1 Disconnect any accessories, such as GameCube controllers or SD cards.
     
   • 2 Unplug your Nintendo Wii AC adapter from the wall outlet and from the back of your Nintendo Wii. Leave the adapter disconnected for two minutes. Reconnect the adapter to the console and plug the outlet end straight into a wall outlet, not a surge protector.
     
   • 3 Remove the AC adapter from the wall outlet again. If the Wii has yet to turn on, the problem may lie within your electrical outlet. Plug a lamp, nightlight or something electrical into the outlet the AC adapter was connected to. If the outlet appears to work, then you'll have to test the AC adapter itself.
     
   • 4 Run your fingers along the AC adapter cable and visually look for any damage, such as frayed wires or a cracked piece of cable. Also look for the model number "RVL-002" and "Wii" on the adapter. If you don't see the "RVL-002" model number and "Wii" on the adapter, then you are using an unlicensed adapter, which can cause instability and power failure. If the adapter has incurred any damage, you will likely have to buy a new adapter.
     
   • 5 Spray air to clean out the vents on the back of the Nintendo Wii. If your Wii has been sitting for a long time, then dust and dirt may have built up around the vents, preventing the console from cooling itself. If the console cannot cool itself, it overheats and shuts down.
     
   • 6 Click "Start," "Internet Explorer" and visit the Nintendo repair page (see Resources) to open a repair claim. If you tried the above steps and your Wii has yet to power on, your system probably needs professional repair.
     

Most power issues with the Wii can be fixed by resetting the AC adapter. You can easily reset the AC adapter by following these steps:


Unplug the Wii AC adapter at both ends (from the back of the Wii system and from the wall outlet or power strip).


The AC adapter must remain unplugged at both ends for a full 2 minutes.
Unplug anything connected to the USB ports and the Nintendo GameCube Controller ports.


While you're waiting, check the AC Adapter for the following:
Make sure that the word "Wii" and the model number "RVL-002 (USA)" molded into the AC adapter.


Check the AC Adapter for physical damage.
After you've waited 2 minutes, plug the AC adapter into the Wii system and directly into a wall outlet, not a surge protector or power strip. If the power light comes on and stays on, then it appears resetting the AC Adapter worked.


If resetting the AC Adapter did not fix your power issues:
Avoid the use of unlicensed products such as memory cards, controllers, and cheat devices.
Check any accessories that connect to the Nintendo GameCube Controller ports or the USB ports of the Wii -- whether licensed or not -- for physical damage.
Make sure the Wii has good ventilation. Avoid operating the Wii while it's on carpeting or inside an enclosed space. If you have the Wii placed in a vertical position, make sure the vent on the bottom is lined up properly with the hole in the plastic stand and no foreign material is obstructing that hole.
Check the vents on the back and side of the Wii for dust build up. If there is a build-up, remove it using a vacuum cleaner with a soft brush attachment.
Make sure that your wall outlet works. To check it, try plugging a lamp into the same outlet where your system was plugged in.
Make sure the AC adapter is attached properly. Firmly plug your AC adapter into the back of the Wii (the port is labeled 12V IN) and into a working wall outlet (not a power strip or surge protector).
Once plugged in, check the power light on the Power button to see if the system is receiving power.
If the power is still continually shutting off regularly, contact Wii support.

You probably need to reset the power cable. Unplug it from the wall and the Wii for 10-15 minutes. It sounds silly but Nintendo built in a reset feature for such failures and this is likely the problem, so give it a shot and see if it works.

Did you unplug it from the Wii, or from the Wall Outlet? You need to unplug it from the wall outlet, not the Wii. If you haven't unplugged it from the wall outlet and left it unplugged for 5 to 10 minutes, then unplug it from the wall outlet and leave unplugged for a good 5 to 10 minutes.

This is a common problem with the Wii. Even if it's hooked up to a surge protector. If there was a power surge, or the power went out, etc...anything, this will happen. The problem is with the AC adapter, not the Wii itself, so power to the AC adapter needs to be cut off.

There is a circuit inside the AC adapter that needs to be reset. Unplug the AC adapter from the wall/surge protector outlet. Don't unlpug it from the Wii, it has to be at the outlet. You have to kill power to the adapter.

Unlpug it from the wall/surge protector outlet, and leave it unplugged for 5 or 10 minutes. This will kill power to the AC adapter, and give the circuit time to reset. When you plug the adapter back into the outlet after 5 or 10 minutes, the red led on the front should be lit up.

Mine did this and you have to unplug everything out of the back of the wii and also unplug the cord from the outlet for a few mins then plug it all back up and mine came back on it was from a power surge and it trips the circuits u have to completely unplug everything for it to reconnect the connectors.

There was a power surge which caused my WII to not power on anymore.
Unplugging the power adaptor fromt he wall for 5 minutes and then plugging it back in
fixed the problem.

I just had the same problem as everyone else. I had a brief power loss and our new Wii system's power would no longer work. To fix the problem, I unplugged everything from our Wii and unplugged the power cord from the outlet. I let the system set for 10 minutes and re-plugged the power only. That did the trick. Then I was able to plug everything back up and we are now back to playing.

Supposedly, doing the steps above resets the Wii according to the Nintendo online trouble shooting guide.

Unplug everything! There is a "breaker" in the power supply and it may need to be reset. Just unplug all cables from the TV and outlets. Let it sit for a couple hours then plug everything back in and it should work fine. If not then the power supply has shorted out due to a strong power surge. You can claim it under your home owners insurance or call Nintendo and try to get it replaced. Thanks! Good luck and happy gaming!!

You likely had a power failure. You need to reset your AC adapter. Here's how:

1. unplug the power cord from the wii. Unplug the adapter from your surge protector or the power outlet.
   
2. wait 90 to 120 seconds. (Some people say to wait 30 seconds. Wrong! At least 90 secs is required for the AC adapter to rest.
3. plug stuff back in and you're good to go.

NOTE: electronics like your wii, ps3, etc should be protected from power surges and power failures! Plug them into a good surge protector. Always!