Why aren't Wii games readable, even with a different disk?

Why aren't Wii games readable, even with a different disk? - Abstract background with white glassy drops

I have a Wii mini console that no longer will play our most-played games, like Mario Galaxy 1, 2, and Mario Kart. It will however still play games I never played, like Paintball.

I purchased a new copy of Mario Kart, thinking the issue was the older disk being scratched, but even the newer disk without scratches returns errors.

Is there possibly some other reason and a fix for why these disks can't be read?

technical-issues nintendo-wii

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How do you fix a game disc that Cannot be read Wii?

What to do

Eject the problematic disc if it is still in the system.

Power the system off and ensure it is placed correctly.

After 30 seconds has passed, power the Wii back on.

Insert the disc. Be sure to verify you are inserting it correctly.

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Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Karolina Grabowska, Markus Spiske, Liza Summer, SHVETS production