Will my old Wii still work?

Just hope it might!

Nintendo systems aren't known to just break for no reason. Plug it in, and it will probably work!

only one way to find out...

If it worked when you boxed it up, it still works, but you need to set it up with your internet provider.

While you might have some minor issues with dust (so you might want to get some canned air on hand), it will most likely work.

Please be aware that all official online services have been discontinued (Online gameplay on May 20, 2014; Wii Shop on Jan. 31, 2019... but still accessible in archive mode, if you need to re-download any purchased content), but you can still play all physical games (& downloaded digital games) with minimal issue (like dead batteries that need replacing).

With that said, if you want to restore MOST online services (multiplayer & Wii-related channels) with the unofficial public servers, you can visit https://rc24.xyz/ to see on how to connect to RiiConnect24 services & WiiMMfi.de servers (WARNING: SoftModding Required for full support, which WILL VOID ANY WARRANTIES you may have!  While I highly doubt you would have warranties at this point, I still point this out as it's a violation of Nintendo's Acceptable Usage Policy).

I will mention that if you choose to softmod your Wii, you could go discless by attaching a USB 2.0 storage device to your Wii to store the disc images on.  Assuming the optical drive is in working order, you can even rip the images on the system itself (as permitted under Fair Use Policy, assuming you keep the game discs for yourself & don't loan / trade / sell them).

You will be able to connect the Wii to your TV through the composite (3-plug) cables that are included, but there are 3rd party aftermarket component (5-plug) cables you can use as well to give the Wii a slight visual boost (from 480i to 480p).

Hope this helps!

I’ve got a collection of early 8-bit home computers from the very early 1980s. They don’t get used for years at a time and they often use notoriously unstable EEPROMs.

But whenever I demonstrate them to other people they still work and when they don’t it’s almost always due to an old-school electrolytic capacitor which has dried out and needs replacing.

Your Wii uses rock-solid reliable ROMs and No electrolytic capacitors; the only problem they tend to get is when they’ve suffered physical/thermal damage or when the laser heads in the optical drive fail (easily replaceable).

So yes. Barring a bit of bad luck your Wii should still work. If it doesn’t then a good working example is often cheaper to buy than attempting to repair yours.

Ummmm...plug it in, connect it to a TV and find out.

I don't understand why you're so worried about this. Unless it was damaged in storage chances are very high that it will work fine. There's really nothing to get stressed out about.

The only way to find out is to plug it in and boot it up.  We recently found an old Wii that had been in storage for years.  It works fine, but the battery packs for the remotes are pretty much dead.