Occasionally, the console won’t play a disc at all.
A flaw in the disc could prevent the console from reading it.
Hold the bottom side of the disc to the light to see any smudges or scratches.
Nintendo
If a smear is the culprit, cleaning the disc often fixes the problem.
Use a microfiber cloth like the ones used to clean eyeglasses.
Or, use a tissue that doesn’t include lotion of any kind.
Gently rub the smudged spot.
When using a tissue, steam the area with your breath first.
Don’t exert more force than necessary; it’s a flimsy disc.
When the disc looks clean, put it in the console.
If it doesn’t work, find a brighter light and look again.
Minor scratches and smudges are challenging to find.
A scratch on a disc is more problematic.
Otherwise:
Some older Wii consoles have trouble with dual-layer discs, which pack more information onto the disc.
Games that use dual-layer discs include Xenoblade Chronicles and the Metroid Prime Trilogy.
Use the right disc for the console.
The Wii and Wii U are different consoles.
The Wii U is backward compatible; it plays Wii games.
The problem may be a dirty lens.
If cleaning the lens doesn’t help,perform a system update.
If cleaning and updating don’t do anything,contact Nintendo.
