Can I fix this???

[Jessika]

Its most likely a defect with the keyboard itself and in how it was made. I also suggest taking it back!

PS: is it JUST the 0 key or is it the shift key?

[catnapper]

Its the ) symbol... which strangely is working again

The 0 worked fine and the shift worked fine on everything else. I wonder what happened!

[G535]

Cat hairs in the keyboard perhaps?

Who knows! Glad it's working again.

[Lady's Human]

There's not much of a contact path in keyboard traces, so if there's any dust at all in the contact area it can cause problems.