Are all you you guys with issues possibly trying to run this with a single video card installed IE Unraid in a Headless mode. Dedicating your one GPU to the SteamOS? If so. Are yall all remembering to use a known good Video bios? The issues many of you are describing sounds very similar to what happens when you attempt to do the same with a windows installation. Windows installs/loads fine without a good video bios, but goes to crap right after installation of video drivers. Which is what it sounds like SteamOS might be doing shortly after its install.