You uninstalled the software. But have you also removed the folder/file at this location 'C: /Users/Name/AppData/Roaming/Electrum/wallets/default_wallet'? This is the location of the user related data not the software itself.
I just uninstalled it and reinstalled it but same error keeps popping up:
cannot read wallet file 'C: /Users/Name/AppData/Roaming/Electrum/wallets/default_wallet'
What do you suggest?