MetaNOT a typical Windows key. You may not be using a Windows key card. You can change the current keymap as follows: File → Preferences → enter “Keymap” to search for Keymap settings → change the keymap setting.
From the comment by @fnl: Meta is not the key commonly found on modern machines. At best, it stays from the Sun. Apple computers have Control, Option, and Command (like Apple Key), just like Windows machines have Control, Alternate, and Windows Key. So in fact it looks like a Windows or Apple Key, but Meta is so important for some that you are often offered to “replace” the Option / Alt Meta key.