Wii "unable to read disc"

HI Denise.

Sometimes a Wii or Wii U is unable to read a disk, or the game will freeze or crash. And sometimes the console won't play any disk at all. Before you throw the disk in the trash or the console out the window, here are a couple of things that might get you back to playing games.13 Jul 2017

What to Do if Your Wii Is Unable to Read a Disc - Lifewire

https://www.lifewire.com/what-can-i-do-if-my-wii-cant-read-a-disk-2498308

or you could try this link.
wii won play games Google Search

There could be several things wrong. Let's start with the most basic - is the disc inserted correctly? The holographic side needs to be on the left when inserting it. Then, make sure there are no scratches or smudges on the bottom of the disc. A common solution is to wipe it with a cloth or even your shirt if you don't have one handy. Look on the holographic side of the disc to make sure there isn't anything left on it. After cleaning thoroughly, try playing the disc again.
If you're still having a problem, try restarting the Wii console. However, there's always a possibility that you have a bad disc or, if you're unable to play any games, a bad console.

Try a cleaning disc. this may fix this issue. if the issue remains, it will confirm a major problem within the optical assembly. you will need to replace the optical assembly in this case. it has failed.

Contact Nintendo for the optical replacement procedure.

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

Fiend your solution direct from nintendo. Here is your solution....


http://www.nintendo.com/wiiconsole/prob676ijt65/solution
139

Fiend your solution direct from nintendo. Here is your solution....


http://www.nintendo.com/wiiconsole/prob676ijt65/solution
134

If Wii gives Unable to read Disc 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

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

"Unable to read the disc" / "Disc could not be read" / "Eject the Game Disc" Error Message.
If you are getting one of the above error messages:

• Ensure that you are properly loading a Game Disc.
  • If your console is placed vertically, the disc label will face to the right.
  • If your console is placed horizontally, the disc label will face upwards
  
  
  
• If you know you are inserting the Game Disc correctly, but are still have the same problem with only one game (or if you only have one game), try cleaning the Game Disc by following the disc cleaning procedures
• 
  If after reading the above information you are still unable to play a game disc, please call 1-800-255-3700 to discuss available options.

:)

If it only does this for this one game, you may have a defective game disc, it happens. Often, if you have just recently purchased it, you can return it to the store and tell them that it was defective and get a new one. If not, you can always try cleaning it though I doubt that's the problem.
nintendo.com says "If after reading the above information you are still unable to play a game disc, please call 1-800-255-3700 to discuss available options."