Maybe your windows defender blocking your Electrum from opening.

How about trying to disable the windows defender first and check if the Electrum is running or not.
I have an old issue with my AV before but after I exclude the Electrum folder from scanning my Electrum wallet it fixed my issue.

So try to disable windows defender first to try and then make sure that Electrum is not running on the background.

Just in case if it doesn't work try to stay turn off the AV/windows defender then uninstall and reinstall the Electrum then test it again while the AV is turned off.