I recently switched to LMDE from Windows 7. I was attempting to install Steam for Linux. I followed these instructions: https://wiki.debian.org/Steam
Now, whenever I boot up the computer, it stops on the Mint logo splash-screen thing. If I disable the splash screen, it freezes after saying "Starting SMB/CIFS daemon: smbd."
I don't know if installing Steam is what caused this, but it is the most recent change I made to the computer.