I'm no geek, but you could try typing Device Manager in your Windows searchbar, then expand Network Adapters, and delete any instances of LogMeIn Hamachi Virtual Internet Adapter. Then uninstall Hamachi and reinstall it.
Depending on your version of Windows, Device Manager usually lives in Control Panel> Administrative Tools> Computer Management> System Tools or thereabouts.
Something like this worked for me, perhaps more by good luck than good management.