Thank you!! Yes, I installed the 'Standalone Executable'. So this was the reason that I did not see an icon, and not an entry in the Start menu of Windows 7.

And indeed I can start Electrum again when I go to the download-file. I did not try this at first, because I was afraid that Electrum would be installed for the second time. But when I do this, I only have to give my password, and Electrum is again there!

I have the new version 2.9.3. Since I know that I must use the download-file to open Electrum again my problem is solved! Thank you again!!

Yes, I know the location where the wallet is installed. But what file must I use to open the wallet again? There I find amongst other files the file default_wallet. But this file has no extension and Windows 7 does not know how to open it. Moreover also in the control panel I don't see the program.
Maybe the installation was corrupt?

Hello,

I never worked before in my life with bitcoins. But this day I installed the Electrum wallet on my computer with Windows. But how can I open the wallet again when I have closed it? Nowhere I see an entry on my computer like with other computer programs.