If you are on a PC, open up a command prompt in admin mode and type
NET START hamachi2svc. Then, while still in the admin command prompt, go to the hamachi directory (cd "C:\Program Files (x86)\LogMeIn Hamachi\" and type (without typing "start"): hamachi-2-ui.exe. Or, you can download this script I made, and paste the file into your startup files, or start manually. But it must ne done via admin Start Hamachi
It appears a few of the automatic startup settings for logmein have changed or have become blocked as a result of windows updates. I will have a more permanant solution soon.