Atom unresponsive on startup or reinstallation

I am on Windows 10. My Atom freezes when I launch it. I uninstalled and reinstalled it, but the problem persits from the very first startup. See screenshot below.


I think the problem could be that it is trying to reopen some last opened file which does not exist anymore. Apparently, even after uninstallation, the memory was not erased. You can see the name of a .jl file on the top left corner. This name appears on the very first launch attempt after installation.
What should I do ?