Acer note book 玩games問題

我部機唔知點解用win 8.1 玩games用唔到fullscreen 仲有個藍框同同最底條start menu BAR整唔走
玩NBA 2K15 冇事,玩grid autosport 街霸都係咁,部機新買,全部games都係正版,有冇師兄知咩事THX!