With the Steam Machine starting to land in some lucky buyers hands, a few of the gremlins in Valve’s compact living-room PC have started to surface. But while some might remind you of infamous hardware failures of old, many of them are smartly designed errors that you can, for the most part, resolve yourself. Last week, the Steam Machine subreddit was rocked with what the community described as the “Red Line of Death,” a reference to the catastrophic Red Ring…