Snappy, please go to "Control Panel(控制台)" and find "電源管理"的"電源配置" tab, change both settings of "關閉監視器" & "關閉硬碟" from Original settings (example: 5 minutes) to "Never(永不)". That should solve the problem. ===>Solution of # 1

Change your screen resolution to the one which the game uses, recommand both resolutions use the same settings. ===> My solution of # 2

Hope this Helps!