My Mac mini (quad 2.5 i7) is freezing on the user login screen. That's not the weirdest part. It's set to automatically log in. I've set the mini up as a plex server and recently it's started going funny. It'll work immediately after startup and then I'll go do other things and when I go to use plex on my anything (smart TV, iPad, iPhone, Xbox, PS4 local or remote) it won't respond and when I get back to my Mac it's on the login screen and no matter what I do it just hangs. Enter password, hangs, hit restart, hangs. I've got it set to automatically log in. I've got it hooked up to my A/V receiver via HDMI cable, and the receiver is connected to the TV via HDMI. I'm running the latest builds of Mavericks and plex media server (with plex pass). I've tried verifying and repairing permissions and the disk from the recovery partition. Anyone got any clues?