~snip~
A few years ago I installed the Electrum wallet for Windows.
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I did find the Program Files, for example: electrum-4.2.2.exe... I clicked on it but nothing happens.
You did not write which version of Windows you have - is it perhaps W7? From what can be read, versions 4.2.x of Electrum do not support W7. You can find more information at this link ->
https://github.com/spesmilo/electrum/issues/7728