Display resolution, sound or startup disk issues, do a PRAM reset. SMC Reset. Apple Menu > Shut Down; Shift + Ctrl + Opt (left side) & Power button at ... ... <看更多>

Actually, as per my experience if you are going to do the SMC reset and your not fully charged battery Macintosh machine is charging, the charging indicator ... ... <看更多>

其他的症状比如系统的风扇高速运转，或者即使没有运行很多应用程序但Mac 也运行迟钝，这时候重置S.M.C 可能有效。 An S.M.C. reset may help if you ... ... <看更多>