I installed Windows 8 Ent using LaNano last week. Just in the last few days, I noticed a startup issue. When my computer boots up, the start screen is unresponsive. I can move my mouse and operate my keyboard but the tiles don't respond to clicks. The live tiles are stuck in their unloaded state. If I hit Ctrl + Alt + DEL and then escape out of that screen, everything on the start screen is operational again.