Hi, I'm new of here. Could anyone tell me the sleep command of Windows 7? I have try that: Rundll32.exe Powrprof.dll,SetSuspendState Sleep but it doesn't work, it will become hibenate. My powercfg C:\>powercfg -a 此系統有以下幾種睡眠狀態: 待命 ( S1 S3 ) 休眠 混合式睡眠 此系統缺乏以下幾種睡眠狀態: 待命 (S2) 系統韌體不支援此待命狀態。 It seems my computer doesn't support the Sleep mode, but I can click the "sleep" option in Start menu and it run perfectly. Anyone can help? Thanks. Sorry for the Chinese character, I cann't find a way to modify Windows response in English.