My Wii is refusing to turn on, even though it is hooked properly. No lights turn on, nothing. I can't even get my disc out! It was working perfectly fine last night. Now, it is completely dead. Help!

You have to try out all these options first:

Turn the Wii off and on again after about 20 seconds. Press the eject button again.

Unplug the Wii's AC power supply if Step 1 doesn't work. Wait 1 to 2 minutes, and trying to eject the disc again after turning the Wii back on.

Hold down the eject button for 5 to 10 seconds.

Try ejecting the disc with the Wii at different angles. If you hold the Wii upside down, it may help the disc fall out.

Call Nintendo and send the Wii back if non of these steps work. In most cases, a disc stuck in the Wii should be covered by warranty.

Nintendo says to see if power light was coming on, AC adapter reset. unplug from both ends for 90 seconds.Hold eject button for five or 10 seconds.

If none of this works, you might wanna try this, but it is not a preferred method, if you ask me, even though it can be done.

To remove a disc you'll need three sets of tweezers. And possibly a bobby-pin.
First you need to turn the Wii upside down (and preferably unplugged from a power source)
Second, using two sets of tweezers, press the small metal "guards" down. These are located just inside the mouth of the Wii. They're there to keep the disc from free falling, and inhibit their removal. They aren't locked and shouldn't be difficult to press down.
Third, you'll need to reach "up" through the middle of the mouth with the third set of tweezers to grab hold of the disc. I'd highly recommend using flat tweezers, not sharp ones as the disc may become scratched.
NOTE: The disc itself rests on the internal carriage (through the center hole of the disc) and if upside down, should fall into your tweezer's grasp easily. If it doesn't then you need a bobby pin to dislodge. Gently press the bobby pin on top of the disc and then grip the disc with the tweezers.
Finally, gently pull and the disc and push on the bobby pin and the disc will slide out easily .

This can be done with one person, but helps if you have an extra hand.
Good luck.

You have a dirty laser or bad laser or bad disc. Suggest seeing if it played on a gamecube or someone elses wii. Will your system play all your other games? If so its the game disc. If your wii has troubles with other games its your wii console.

As the Wii uses discs that can be scratched, dirty, or otherwise damaged -- it's important to first check the disc.

Look for fingerprints or other smudge marks. If you have dirty marks on the disc, you can wash it off with regular dish soap and water. Not too much soap though. Make sure you dry it off with something very soft [like a microfiber cloth] before you put it back into your Wii.

Second -- scratches will stop a disc from playing... or the disc will play until it gets to the scrached section then give you an error. Check and make sure there are not too many -- or deep scraches.

If a scratched game won't play through but other games play just fine -- chances are the disc is bad. However, if nothing is playing through on your Wii, not even a new game, there is a problem with the Wii's DVD drive. There is a laser in the drive that reads discs -- and many other moving parts in there. The following website sells the Wii DVD drives. It's not too difficult to replace yourself:

http://store.richspsxparts.com/wiiredvddr.html

your wii is fake

The sensor may be gone.  The best way to test this is really easy and pretty cool to do.  Take two candles light them and then place them a little further apart than the wii sensor is.  If you are able to use the remotes then the sensor bar needs to be replaced and if ther is still nothing I would try replacing the controller because the infered led's may have gone out.  If that still does not work then the sensor decriptor in the wii has gone out.  Nintendo should be able to help you with that part.  But I do not think that it is the Wii.  I feel that your sensor bar is bad.  

Check the AV cables may be not connected right or the AV cable is broken.

If Wii gives Disc Read Error, first step you need to check is to try another disc or clean the exisitng disc. This will confirm that problem is with either Wii or Disc. If the console itself is giving disc read error then it needs to be repaired. You may check out DIY Wii Fix Guide, that will show step by step information to fix the problem yourself. It also gives information on fixing many Wii Related Problems, so its a kind of Wii Problems Reference Fix Guide

Unplug the power cord for an hour then plug it back in and try it.

Go to the tv settings and check to see if you blocked any incoming devises. If you did block the devides, your tv will not read the wii

try openin it up an cleanin the lens with rubbing alcohol