Okay, I have stopped the services

I edited the Advanced properties with a prefix of -m

I restarted the services

I went to the command prompt and it didn't work. 1 when trying to login it tells me only 1 admin can be loggedin at a time if I just try the commands in the prompt it fails on not recognized commands

If I stop the service and try to access it from the command -m is unrecognizable and if I just try to log in I get SQL server is not found or not accessible

also DAC is not enabled