Went into matchmaking, screen went black and Marathon no longer running. Loaded back in and said eliminated, lost loot.

Went into matchmaking, screen went black as though I had loaded in with other players. But then it went to my desktop and Marathon was no longer running in task manager.

Steam shows Marathon running, and then Steam stopped working.

Got back into Steam after 30 minutes of troubleshooting, then Marathon loaded and said I was eliminated in a match and all of my loot was lost.