This has happened to three of my games now, AOE3, HL2 and Far Cry. I alt tab out of the game to check on something, and the game gets stuck in windowed mode. after restarts of computer and changing games resolution, it still persists. made sure in all games EXE files that i selected "run maximized" to no avail. i honestly dont know what else to do to fix this as ive never encountered it before!?