I use an extra company desktop as my Plex server at home. It will lock up at random times; some times twice in 1 day, some times once in a week. I have tried looking in Event Viewer to give me more detail, but all it says is that it unexpectedly shutdown blah blah blah. I have no clue what could be causing this, but it's frustrating when trying to watch a movie or TV show remotely and my Plex server is locked up and the only way to get it going again is a physical power button push. Let me know what you need me to do to give you more information and/or what tests to run.
Thanks in advance!